Kendriya Vidyalaya CISF-RTC(A)
Thakkolam District-Vellore Tamilnadu-631152
HOLIDAY HOMEWORK FOR
SUMMER VACATION 2016-2017
Teacherrsquos Assignments to Students Mr RR Srinivasan PGT-PHY
Mrs SNirmala Devi PGT-ENG
Mrs A Vasanthi PGT-Maths
Mrs Soma Seal PGT-CS
Mrs Thamizharasi Govindan PGT-BIO
Mr Jai Prakash Verma PGT- Hindi(Cont)
Mrs Margaret Peter TGT-ENG
Mr Ranjeet Bisht TGT-SCIENCE
Mr Rajendra Pratap TGT-SST
Mr Nitin Tiwari TGT-Maths
Mrs Rathi
Mrs Rajani TGT-SST(Cont)
Mrs Pooja Singh TGT-Hindi(Cont)
Mrs Archna Pandey TGT-Sanskrit(Cont)
Mrs Christobel PRT(Cont)
Mrs Anita Saroj PRT(Cont)
Mrs Sajjina KM PRT(Cont)
CLASS-3
CLASS III HOLIDAY HOME WORK [2016-17]
HINDI
५० ऩज सरख | किसन कमा िहा (ऩज ७८) चारट भ चचतर फनायमए |
ENGLISH
Make a flower scrap book ( Refer English Text book Page no 7amp8)
Assignment Write about any 5 birds with drawing in A4 sheet
Write in a chart Good morning poem or bird talk poem with drawing
English Hand writing ndash write in 50 pages 4 lines note (any stories apart
from text book)
EVS
Paste the pictures of any 10 mammals birds insects and reptiles
in a chart
Paste the pictures of any 10 herbs and shrubs in a chart paper
Draw a plant and label its parts in a chart
Write any 10 slogans about water in A4 sheet
Math
Write 1 to 1000 Numbers in A4 sheet
Write the tables of 23456789 and 10 in A4 sheet
Prepare a mask ( page no 12 in maths text book)
Draw a beautiful Rangoli in a chart
Computer
1) PARTS OF COMPUTER amp FUNCTIONALITY WITH FIGURE
2) IDENTIFY THE KEYS OF KEYBOARD WITH FIGURE
3) CREATE PAINT PRESENTATION (LIKE HOUSE FOREST MOUNTAIN
SKY)
CLASS-4
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Teacherrsquos Assignments to Students Mr RR Srinivasan PGT-PHY
Mrs SNirmala Devi PGT-ENG
Mrs A Vasanthi PGT-Maths
Mrs Soma Seal PGT-CS
Mrs Thamizharasi Govindan PGT-BIO
Mr Jai Prakash Verma PGT- Hindi(Cont)
Mrs Margaret Peter TGT-ENG
Mr Ranjeet Bisht TGT-SCIENCE
Mr Rajendra Pratap TGT-SST
Mr Nitin Tiwari TGT-Maths
Mrs Rathi
Mrs Rajani TGT-SST(Cont)
Mrs Pooja Singh TGT-Hindi(Cont)
Mrs Archna Pandey TGT-Sanskrit(Cont)
Mrs Christobel PRT(Cont)
Mrs Anita Saroj PRT(Cont)
Mrs Sajjina KM PRT(Cont)
CLASS-3
CLASS III HOLIDAY HOME WORK [2016-17]
HINDI
५० ऩज सरख | किसन कमा िहा (ऩज ७८) चारट भ चचतर फनायमए |
ENGLISH
Make a flower scrap book ( Refer English Text book Page no 7amp8)
Assignment Write about any 5 birds with drawing in A4 sheet
Write in a chart Good morning poem or bird talk poem with drawing
English Hand writing ndash write in 50 pages 4 lines note (any stories apart
from text book)
EVS
Paste the pictures of any 10 mammals birds insects and reptiles
in a chart
Paste the pictures of any 10 herbs and shrubs in a chart paper
Draw a plant and label its parts in a chart
Write any 10 slogans about water in A4 sheet
Math
Write 1 to 1000 Numbers in A4 sheet
Write the tables of 23456789 and 10 in A4 sheet
Prepare a mask ( page no 12 in maths text book)
Draw a beautiful Rangoli in a chart
Computer
1) PARTS OF COMPUTER amp FUNCTIONALITY WITH FIGURE
2) IDENTIFY THE KEYS OF KEYBOARD WITH FIGURE
3) CREATE PAINT PRESENTATION (LIKE HOUSE FOREST MOUNTAIN
SKY)
CLASS-4
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-3
CLASS III HOLIDAY HOME WORK [2016-17]
HINDI
५० ऩज सरख | किसन कमा िहा (ऩज ७८) चारट भ चचतर फनायमए |
ENGLISH
Make a flower scrap book ( Refer English Text book Page no 7amp8)
Assignment Write about any 5 birds with drawing in A4 sheet
Write in a chart Good morning poem or bird talk poem with drawing
English Hand writing ndash write in 50 pages 4 lines note (any stories apart
from text book)
EVS
Paste the pictures of any 10 mammals birds insects and reptiles
in a chart
Paste the pictures of any 10 herbs and shrubs in a chart paper
Draw a plant and label its parts in a chart
Write any 10 slogans about water in A4 sheet
Math
Write 1 to 1000 Numbers in A4 sheet
Write the tables of 23456789 and 10 in A4 sheet
Prepare a mask ( page no 12 in maths text book)
Draw a beautiful Rangoli in a chart
Computer
1) PARTS OF COMPUTER amp FUNCTIONALITY WITH FIGURE
2) IDENTIFY THE KEYS OF KEYBOARD WITH FIGURE
3) CREATE PAINT PRESENTATION (LIKE HOUSE FOREST MOUNTAIN
SKY)
CLASS-4
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS III HOLIDAY HOME WORK [2016-17]
HINDI
५० ऩज सरख | किसन कमा िहा (ऩज ७८) चारट भ चचतर फनायमए |
ENGLISH
Make a flower scrap book ( Refer English Text book Page no 7amp8)
Assignment Write about any 5 birds with drawing in A4 sheet
Write in a chart Good morning poem or bird talk poem with drawing
English Hand writing ndash write in 50 pages 4 lines note (any stories apart
from text book)
EVS
Paste the pictures of any 10 mammals birds insects and reptiles
in a chart
Paste the pictures of any 10 herbs and shrubs in a chart paper
Draw a plant and label its parts in a chart
Write any 10 slogans about water in A4 sheet
Math
Write 1 to 1000 Numbers in A4 sheet
Write the tables of 23456789 and 10 in A4 sheet
Prepare a mask ( page no 12 in maths text book)
Draw a beautiful Rangoli in a chart
Computer
1) PARTS OF COMPUTER amp FUNCTIONALITY WITH FIGURE
2) IDENTIFY THE KEYS OF KEYBOARD WITH FIGURE
3) CREATE PAINT PRESENTATION (LIKE HOUSE FOREST MOUNTAIN
SKY)
CLASS-4
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-4
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-IV SUB ndash ENGLISH
1 a ASSIGNMENT (A4 SHEET) ndash Write the opposites of the words given below by adding lsquounrsquo or lsquoimrsquo A) Happy b) seen c) lucky d) important e) healthy f) patient g)polite h) proper i) possible j)safe k) pure l) Perfect b Write the past tense of ndash a) write b) sing c) come d) go e) read f) Drink g) see h) move i) eat j) keep k) look m) laugh n) walk o) run 2 a PROJECT- Draw your favorite fruit and write 5 sentences on a chart paper (English text book on page no 20) b Make a word tree by seeing English text book on page no 34 Use chart paper or colour paper
SUB- हिनदी १ - सकरपबक भ विभबनन परिाय िी गदो ि चचतर चचऩिाइए औय उनि नाभ बी भरखखए - २ - A4 sheet ऩय १० विरोभ शबद १० ऩमाटमिाची शबद १० शबद मगभ भरखखए ndash ३ - अ) चारट पपर ऩय lsquoिोई राि भल द rsquoिविता िो भरखखए तथा चचतर फनाइए -
)किताफ रयभखलभ ४ भ ऩज न
२१ ऩय |(
ब )चारट पपर ऩय पररपाभट िा दशम फनाइए ndash SUB- MATHS
1- Multiplication tables 2 to 20 on A4 sheet 2- Paste different types of tickets in A4 sheet 3- Model of a clock by card board SUB- EVS 1- Make any one model of - Camel cart Bullock cart Jugadu 2- Assignment in A4 sheet ndashWrite about tiger or elephant (2 pages) with picture 3- Chart work- Animals and birds make by paper folding and paste on the chart paper
Computer 1) GENEARATION OF COMPUTER ANCIENT TO MODERN COMPUTER 2) CLASSIFICATION OF COMPUTER 3) CREATE ANY MICROSOFT WORD DOCUMENTATION WITH TEST IMAGE PAGE BORDERCOLOR
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-5
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-V ENGLISH
1 The following words given below have more than one meaning Write their meanings by looking into a dictionary a) Ground b) survey c) scrap d) sternly e) tempting
2 Write rhyming words for the following a) Team b) plus c) done d) hoop e) shoot f) goal g) joy
3 Write contractions for the following a) Has not b) have not c) do not d) were not e) was not f) are not
4 Here are some answers Frame questions for the following a) The colour of the ant is black b) It lives on land c) It has two long antennae d) It crawls on the ground e) It eats sugar
5 Do the puzzle from your English text page no 26
MATHS 1 Write about the angles that are using in YOGA 2 Make shapes using matchsticks in a chart 3 Make a paper degree clock and angles made by the hand of a clock
HINDI
१) आऩि भनऩसद खान किसी चीज िी साभगरी भातरा एि उसिी विचध भरखखए |)हहदी किताफ ऩज नफय १८ १९) ( A4 sheet)
२) यनमन भरखखत तमोहायो भ स किसी एक तयोिार ि फाय भ दस िाकम भरखखए | (A4
sheet)
१) दीऩािरी २ (होरी ३ ( ऩोगर
२) गाधीजी ि फाय भ दस िाकम भरखखए | (A4 sheet)
३) 02 ऩज सरख )५० ऩज नोर फि( EVS 1 collect any five animals special senses from newspaper cutting Internet
2 Write about endangered animals and paste their pictures 3Draw digestive system and label itrsquos parts 4 Write any 10 vitamin deficiency diseases and preventions
SUB-Computer 1) MICROSOFT WORD TABLE CREATION 2) CREATE ANY MS WORD DOCUMENTATION WITH NECESSARY TOOLS 3) LIST OUT KEY BOARD SHORT CUT METHODS IN MS WORD
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-6
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS VI A Sub-English
1- Customary hysterically rage smeared unaware sobbing hastily impressed compliment astonished sympathy mocking summoned delight thundered astonish dignity jealous scatter disciple declare insist downcast perspire rejoice composed Darted amid expensive delicious intended frontier launch pursue glued disaster observe survive exist amazed
2- The following are some of the words from famous proverb Find out the proverbs and write them down
3- Barking dog golden key friend workman rolling stone a stitch storm glitter jack beggar
SUB- हिनदी 02 ऩज सरख I
ldquoचााद स थोड़ी गपऩrdquo िविता चारट ऩय चचतर सहहत िविता भरखखए I 51 विरोभ शबद भरखखए I
अऩन फचऩन ि फाय भ एि ऩज भरखखए I सऻा िी ऩरयबाषा भरखिय परतमि ि दस - दस उदाहयण भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा
विषम ससित
१ करीडा समफचधतभ चचतरभ )चारट (
ककरिरभ िबफडी ऩािदिभ चतयग
२ सखमािाचि शबदा भरखत
१ स ५० )नोर ऩपसतिा(
३ शबदरऩाखण भरखत
फारि ि फाभरिा
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Sub- Mathematics Q 1 In one state the number of bicycles sold in the year 2002-2003
was 743000 In the year 2003-2004 the number of bicycles sold was
800100 In which year were more bicycles sold and how many more
Q-2 Write in Roman Numerals (a) 69 (b) 98
Q3 Estimate each of the following using general rule
(a) 730 + 998
(b) 28292 ndash 21496
(c) 1291 times 592
Q4 The number of sheets of paper available for making notebooks
is 75000 Each sheet makes 8 pages of a notebook Each notebook
contains 200 pages How many notebooks can be made from the paper
available
Q5Fill in the blanks
(a) 1 lakh = _______ ten thousand
(b) 1 million = _______ hundred thousand
(c) 1 crore = _______ ten lakh
(d) 1 crore = _______ million
(e) 1 million = _______ lakh
Q6 Add 3 and 5 on the number line
Q7 Subtract 9 and 3 on the number line
Q8 Multiply 2 and 6 on the number line
Q9Find the value using suitable properties
a) 91264 times 169 ndash 91264 times 69
b) 248 times 1008
Q10 The school canteen charges Rs 20 for lunch and Rs 4 for milk for
each day How much money do you spend in 5 days on these things
ACTIVITY
Write the following roman numbers on a A-4 sheet using matchstick
10 20 30 40 50 60 70 80 90 100 500 1000
SUBJECTSOCIAL SCIENCE
1COLLECT THE PICTURES AND INFORMATION ABOUT HUNTER GATHERS 2PICTURES AND INFORMATION ABOUT PLANETS 3CHART ON THE SOLAR SYSTEM 4PICTURE AND INFORMATION ABOUT THE LEADERS-MAHATMA GANDHIJAWAHARLAL NEHRU AND DRBRAMBEDKAR
SUBJECT SCIENCE 1 Collect different types of grains (chart)
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
2 Poster making for different sources of carbohydrates fats and proteins( chart ) 3 Draw the diagrams of different sources of vitamins A B1 C ampD ( A4 sheet) 4 Write an assignment for the following (A4 sheet) a) Explain different types of fabrics b) Write some diseases and disasters caused by the deficiency of vitamins and minerals c) Brief on Herbivores carnivores and Omnivores
Computer
1) BASIC COMPONENTS OF COMPUTER
2) CREATE MS WORD DOCUMENTAION
3) HISTORY OF COMPUTER
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-7
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS ndash VII
SUBJECT MATHAMATICS
Write an assignment on the following questions
1 Find each of the following products
a)3 X (-1) b)(-12) X (-11) X 10 c)(-3) X (-6) X (-7) X (-1)
d)(-15 X 0 X (-9) e)(-3) X (-6) X (-2) X(-1) f)(-316) X (-12)
2 Find the products using suitable properties
a)26 X (-38)+(-3 X (-46)) b)(-41 )X 202 c)7 X (50-2) d)(-17 )X (-39
3 Evaluate each of the following
a) (-40)20 b) 15 [(-2)+1] c) (-41) [( -40) +(-1)]
4 Write down a pair of integers whose
a) sum is -3 b) difference is -5
5 A cement company earns a profit of RS 7 per bag of white cement sold and a loss of Rs 4 per a bag of
grey cement The company sales 5000 bags of white cement and 8000 bags of grey cement in a month
What is profit or loss
6 Rita goes 40 km towards east from a point A to the point B From point B She moves 50 km towards
west along the same road If the distance towards east is represented by a positive integer then How
will you represents the distance travelled towards west By which integer will you represent her final
position from A
7 Use the sign of ltgt= in the following blanks to make the statements true
a) (-7)+ (-3) ------------ (-7)+ (-3)
b) 23- 411 +11 ------- 23-41-11
c) -231+79+51-------- -399+159+18
d) 8+5 ----------- (-3) + (-2)
8 Find the complement of each of the following angles
a) 200 b)570 c) 630
Science
1) Prepare your own cross word puzzle based on the first three chapters
Minimum down 7 Words and across 7 words
2) Life history of silk moth Diagrams and explanation (refer page no 28)
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
3) Rearing Silkworms Diagrams and explanation (refer page no 30)
4) Draw the human digestive system and label the parts (Refer page no12)
5) Collect the leaves of various colours (at least 10) and paste in the activity note
book
Computer
1) BRIEFLY EXPALIN ABOUT VIRUSUS amp ITS TYPES
2) WRITE BASIC HTML PROGRAMME FOR THE NEW WEB PAGE
3) BRIEF NOTE ABOUT THREAT TO COMPUTER
Social Science
1COLLECT INFORMATION AND PICTURES ABOUT ANY FIVE DELHI SULTANS
2PICTURES AND INFORMATION ABOUT ANY FIVE MUGHAL RULERS
3CHART ON ECOSYSTEM
ENGLISH
1 FIND THE DIFFICULT WORDS FROM THE TEXT BOOK AND MAKE A DICTIONARY
2 PREPARE TENSES TABLE USING THE VERBS GIVEN
3 WRITE THREE PICTURE STORIES USING SPEECH BUBBLES
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
विषम ndash हहदी
१ -फीस ऩज सरख
२ - शबदिोष अ स अ
३ - विरोभ शबद फीस औय दस ऩमाटमिाची
४ - नहदमो स होन िार राब ऩय अनयिद
५ - िविता ितऩतरी सचचतर
विषम ससित
१ सभह ऩरयमोजना िामटभ चचतरभ )चारट (
२ सखमािाचि शबदा भरखत
१स १००
३ भजषात उचचत शबदभ चचतिा भरखत
३ भजषात उचचत शबदभ चचतिा भरखत
)िस धया सभररभ समट ऩिन यातरतर नाभ(
अ) जरभ ----------- आ (ऩचथिमाभ------------ इ (यनशा ----ई (िाम ------------- उ (यवि -------------- सऻा ------------
शबदरऩाखण भरखत
एतत ऩभरनग सतरीभरग नऩसिभरग
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
विषम ससित
१ सभह ऩरयमोजना िामटभ शोरिभ )चारट (
२ सखमािाचि शबदा भरखत १स १००
३ भजषात उचचत शबदभ चचतिा भरखत
)बजग जगत तन धयणी शीघरभ श हदलरी
रोि ----------- ब -------------मपरभ ------ सऻा ----------
सऩट ------------ दह--------------
४ शबदरऩाखण भरखत
असभद ि मसमद
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-8
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Class VIII
CH Rational Numbers
Submission Date-22june2016
Q1) Verify the associative law of addition for the rational numbers
Q2) Write in ascending form -
Q3) Verify the closure property for subtraction by taking any example of 2 rational
numbers
Q4) By taking any suitable examples check if the commutative and associative laws are
true forsubtraction for rational numbers State the properties reflected in the
statements below-
Q5)
Q6)
Q7) Is the commutative law for division true for rational numbers Justify your answer
with the help of an example
Q8)By what rational number should the sum of
and
be divided to get
Q9)Find
(
) (
) (
)
Q10)Represent (i) -515(ii) 194 on number line
Q11) Write seven rational number between -37 and 58
Q12) Write six rational number between -79 and 511
Q13) One coin weighs 7 14 g How much would 24 coins weigh
Q14)Find
Q15)Find any ten rational numbers between 56 and 58
Q16) Find five rationalnumber between frac14 and frac12
Q17) Write five rational numbers which are smaller than 2
Q18) Write five rational numbers greater than ndash2
Q19) Find
Q20) Multiply 717 by the reciprocal of -35
Linear Equation in One Variable
Submission Date-22june2016
Q1)Solve the following equations
(1) 5x ndash 2 = 9 (2)
(3) 7x + 11 = 3 + 12
(4)
(5) 3m ndash 4 = 4m + 11
(6) 5(x + 2) = 2(x ndash 1) (7) 2(x + 3) = 8 ndash 3 (x ndash 4)
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
(8) 2x ndash 43 = 17 (9) 2y + 9 = 4 (1o) 2x ndash 2 = 7
(11) y +13 = 10 (12 ) 6 = z +22 (13) 7x ndash19 = 16
(14) 14y ndash18 = 13 (15) 17 + 6p = 19 (16) 2x ndash 3 = -6x + 2
(17) 13x = 22x + 18 (18) 5p ndash 43 = 3p ndash 5 (19) 5x +1 9 =2 5 +
3x
(20) 24z + 3 = 36 + 2z (21) 12x ndash1 1 = 14 ndash x (22) 8x + 4 = 3 (x ndash 10) + 57 (23) 3(k ndash 13) = 5(2k + 41)
(24) 15(3y ndash 4) ndash2(5y ndash 9) + 5(2y + 6) = 0
(25) 3(5z ndash 17) ndash 12(9z ndash 11) = 14(8z ndash 13) ndash 21
(26) 25(4f ndash 30) = 05(10f ndash 90)
Q2) Three times a number decreased by 5 gives the result 16 Find
the number
Q3) Twice a number increased by 5 is the same as three time the
number decreased by 8 Find the number
Q4) what should be added to twice the rational number -45 to get
47
Q5) The sum of three consecutive multiples of 12 is 132 Find these
multiples
Q6) The difference between two whole numbers is 77 The ratio of
the two numbers is 2 9 What are the two numbers
Q7) Sum of two numbers is 85 If one exceeds the other by 13 find
the numbers
Q8) Two numbers are in the ratio75 If they differ by 20 what are
the numbers
Q9) Three consecutive integers add up to 54 What are these
integers
Q10) The sum of three consecutive multiples of 9 is 999 Find the
multiples
Q11) Three consecutive integers are such that when they are taken in
increasing order and multiplied by 5 6 and 7 respectively they add up
to 56 Find these numbers
Q12) The ages of Raj and Hari are in the ratio 45 Five years later
the sum of their ages will be 64 years What are their present ages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q13) I have a total of Rs 300 in coins of denomination Re 1 Rs 2 and
Rs 5 The number of Rs 2 coins is 3 times the number of Rs 5 coins
The total number of coins is 160 How many coins of each denomination
are with me
Solve the flowing equations
Q14) The digits of a two-digit number differ by 3 If the digits are
interchanged and the resulting number is added to the original
number we get 143 What can be the original number
Q15) Present ages of Anu and Raj are in the ratio 45 Eight years
from now the ratio of their ages will be 56 Find their present ages
Q16)The difference of two positive numbers is 69The quotient
obtained on driving one by the other is 4 Find the number
Q17)What are three consecutive integers whose sum is 63
Q18)One third of which number must be subtracted from to give
Q19)Two numbers are such that the ratio between them is 35 If
each is increased by 10 the ratio between the new numbers so formed
is 57 Find the original numbers
Q20)The denominator of a rational number is greater than its
numerator by 7If the numerator is increased by 17 and the
denominator is decreased by 6 the new number becomes 2Find the
original number
Q21)The digits at the tens place of a two digit number is four times
that in the units place If the digits are reversed the new number will
be 54 less than the original number Find the original number Check
your solution
Q22)A number consists of two digits of which tenrsquos digit exceeds the
unit digit by 7 The number itself is equal to 10 times the sum of its
digits Find the number
Q23)Seema is now 9 years older than Beena In 10 years Seema will
be twice as old as Beena was 10 years agoFind their present ages
Q24)The difference between two angles is degIf these angles are
complementary find the angles
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Computer
1) WHAT IS ALGORITHM amp EXPLAIN
2) WHAT DO YOU MEAN BY FLOW CHART
3) WRITE AN ALGORITHM FOR PRODUCT OF TWO NUMBERS
English
1Find out the meaning of the following words and make a dictionary out of it
Surged panorama jubilant overwhelm formidable exhaustion endurance persistence obstacle
miserable exhilarating remote brutal stake aloof rugged encounter urge ennobling revere
resolute tranquil clamped desperate embarrass
2 The following are some of the words from famous proverb Find out the proverbs and write them
down
Spade fire devil habit peter Rome beauty fool stitch crown
1Nothing could ever abash him (a) please (b)delight c embarrass d infuriate 2 The doctor gave him some medicine to abate his pain (a)increase b)reduce c)augment d)revive 3The king abdicated the throne in order to marry a commoner a)Grabbed b) usurped c)abandoned d) retained A 4 A rich kid was abducted yesterday a)Rescued b) kidnapped c) killed d)betrayed 5The young man stole the money in a moment of aberration a)deviation b) conformity c)anecdote d) sanity 6 We abhor a traitor a)(admire b)scorn c)respect d)revere 7A good citizen abides by law a) violates b)removes c)shifts d)adheres to 8We dont force anyone to abjure his religion a adopt b give up c cherish d abduct 9Grace has abominable taste in clothes a Graceful b detestable c delightful dclassy 10 His garden abounds in beautiful flowers a teems with b lacks c abhors d abdicates 11Dont tamper with others private affairs A Give up b be indifferent to c be apathetic about d interfere with 12The salt tang of the sea air may refresh your energy a Taste or flavour b genre c gleam d embellishment 13Those primitives still find tangible expression of divinity in idols a Ethereal b spiritual c unreal d definite 14 There is a very high tariff on cosmetics
A Schism b division c tax d coalition
15 The puzzle baffled everybody a Illuminated b confused c enlightened d delighted
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
SUB- हिनदी 02 ऩज सरख
अऩनी किसी योचि फस िी मातरा िा िणटन िीपजए I जिाहयरार नहर ि फाय भ भरखखए I 51 विरोभ शबद भरखखए I
यनमनभरखखत ि तीन ndash तीन ऩमाटमिाची शबद भरखखए ndash धयती जर आिाश फादर िभर पर समट चनरभा नदी हिा गणश
िण ऩिटत घय िन
ऩाशचातम औय आधयनि सभमता भ फदराि ऩय चचतर ि भाधमभ स चारट ऩय I =
Social Studies 1-MAKE A FLOWCHART WHICH CONTAIN CLASSIFICATION OF RESOUCE WITH SHORT
DEFINITION AND EXAMPLE
2- LISTOUT ANY 10 FEATURE OF INDIAN CONSTITUION WITH DESCRIPTION
3-MAKE A PROJECT WHICH CONTAIN BASIC INFORMATION ABOUT THE PARLIAMENT OF
INDIA AND THE FUNCTION OF INDIAN PARLIAMENT
4- MAKE A MODEL ON ANY SUBJECT WHICH IS RELATED WITH THE CLASS VIII SST SYLLABUS
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-9
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Class - 9
CH Numbers System
Submission Date-22 June 2016
Q1) Which is greater radic radic
Q2) Write 5 rational numbers between 1213 and 178
Q3) Write 561 as a rational number
Q4) Represents 125 on the number line
Q5) Represent 3 on the number line
Q6) Write 5 irrational numbers between 23456 and 2457
Q7) Represents 215 on the number line
Q8) Write 465 as a rational number
Q9) Represent 513 on the number line
Q10) If radic radic
radic find a and b
Q11) Find rational or irrational - (I) (23 +5) (23 -5) (ii) 33 + 52 -27 -50
Q12) Write 5 rational numbers between 112 and173
Q13) Write 121180 as decimal
Q14) Represent 46784 on number line as magnifying
Q15) Represent 63 on the number line Q16) Find the value of
( )
+
( )
+
( )
Q17) Represent98 on the number line
Q18) Simplify radic radic
radic radic
Q19) Find whether following is rational or irrational (33 +7) (33 +7)
Q20) Express
radic radic radic with a rational denominator
Q21) Write in the form of pq (i) (ii) 320 (iii) 000
Q22) If radic radic
radic finda and b
Q23) Represent 5 +2 on the number line
Q24) Represent 5on the number line
Q25) Write 5 irrational numbers between 25683 and78
Q26) If radic radic
radic radic find
Q27) If radic radic
radic radic and radic radic
radic radic find x + y
Q28) If
radic
radic radic Find a and b
Q29) If
then n=hellip
Q30) Simplify radic
radic radic
radic
radic radic
radic
radic radic
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Class ix CH -polynomials
Submission Date-22June2016
Q1)Factorisex4 - 125x
Q2) Find remainder if x-5 is a divides 11x3 ndash 4x2 +5
Q3)Factorise x3 ndash 3x2 ndash 3x + 1
Q4)Find p (13) of p(x) =3x3 ndash 2x2 ndash x
Q5)If x+3 is factor of 2x3 ndash 11ax +2afind a
Q6) Find the zeroes of p(x) = x 3 ndash 6x2 ndash 7x
Q7)Findp (ndash23) and p (-45) of p(x) =3x3 ndash 4x2 ndash 11
Q8)Factorise x5 yndashx y5
Q9) (a)Factorise a3 + b3+ (a + b) 2
(b) When 3x2 ndash 2ax ndash 5b divided by x-2 and x+1 leave 5 and 4 as remainder
Find a and b
Q10) Factorise x6 - y6
Q11) Find remainder if 4x-7 divides 2x3 ndash x2 + 11 x + 2
Q12) If 2 x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q13)Factorise7x3- 343x
Q14) Finda if x + 4 is factor of x3 ndash 2ax2 +2 a [2]
Q15) Find remainder if 2x+7 divides x3 ndash x2 + 12 x + 12
Q16)Find the remainder when polynomial P(y) = y3 + 3y3 +3y + 1 is divided by( y ndash frac12
)
Q17) If the polynomial kx3 + 4x2 + 3x ndash 4 and x3 ndash 4x + k leave the same remainder
when divided by x ndash 3 then find the value of k
Q18)Find the value of lsquoarsquo if x ndash a is a factor of the polynomial x3 ndash ax2 + 2x + a ndash 1
Q19)Factorise (2x ndash 3y)3 + (3y ndash 4z)3 + (4z ndash 2x)3
Q20)Factorise x3 ndash 3x2 ndash 10x + 24
Q21) If x+5 is factor of 2x3 ndash 10ax 3afind a
Q22)Find p(23) and p(-45) of p(x)=3x3 ndash x2 ndash 10
Q23)Factorise x3 + 125
Q24)If 2x+3 is factor of x3 ndash 5ax 2afind a
Q25)Evaluate 1023 (using identity)
Q26)Factorise x3 ndash 9x2 + 8x + 60
Q27) Find remainder if x -7 divides 3x3 ndash x2 + 5 x + 3
Q28) Factorise8x6 - y3
Q29) Find remainder if -3x+5 divides 3x3 +2 x2 - 5 x +7
Q30) If 3x ndash 5 is a factor of 3x2 + 11 ax - 6afind a
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q31) Find remainder if x-5 divides 6x3 ndash 2x2 + 15 x +8
Q32) If x ndash 5 is a factor of 5x2 + 12 ax + 5afind a
Q33)Factorise x3 ndash 2x2 ndash 29 x - 42
Q34) If x+3 is factor of 2x3 ndash 11ax +2a find a
Q35) Find p (-13) of p(x) = 3x3 ndash 2x2 ndash x +5
Q36) Simplify (5x - 7y)3 + (5x + 7y)3
Q39) Simplify (7x ndash 5y + 2z)2 + (7x ndash 5y +
z)2
Q40) Write (i) a cubic trinomial (ii) ten degree binomial (both with one variable)
Q41)Give one example each of a binomial of degree 33 and of a monomial of
degree 120
Q42) Evaluate 108 times 102 without multiplying directly
Q43) Write (3a - 4b - 5c)2 in expanded form
Q44)Expand (4a ndash 2b ndash 3c)2
Q45)Factorise 8x3 + 27y3 + 36x 2 y + 54xy2
Q46)Evaluate the following products without multiplying directly
(i) 103 times 107 (ii) 95 times 96 (iii) 104 times 96
Q47)Factorise the following using appropriate identities
(i) 9x2 + 6xy + y2 (ii) 4y2 ndash 4y + 1
Social Studies
1INFORMATION AND PICTURES ABOUT THE PHILOSOPHERS RELATED WITH FRENCH
REVOLUTION
2SURVEY OF THE STATE LEGISLATIVE ELECTIONS
OR
MAJORE PHYSICAL DIVISION OF INDIA - LOCATE ON ON INDIA MAP AN DESCRIBE ABOUT EACH
DIVISION
3-LISTOUT THE NAMES OF ANY 50 DEMOCRATIC COUNTRY WITH THEIR FORMS OF
GOVERNMENT AS WELLAS GIVE THE NAME OF PRESIDENT OR PRIME MINISTER OF THAT
COUNTRY
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Subject ndash Computer 1 Which company developed Photoshop 2 In which field Photoshop is helpful
3 Write the steps to save Photoshop document 4 Write one difference between Marquee tool and Lasso tool
5 What is crop tool 6 Define the term multimedia 7 What are the various photo editing softwares available Give a brief
description of each 8 What is animation What is the difference between 3D animation and 2D
animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size paper
Subject - English
1 Choose 5 news pertaining to local national international business and sports Select 5 word
from each and write down the meanings which will be asked later
2 Choose any speech of Dr APJAbdul Kalam and write it down and how it has inspired you
SUB- हिनदी परतमि सभास ि दस -दस उदाहयण भरखखए I
दस परतमम औय दस उऩसगट स परतमि ि तीन -तीन शबद फनात I
सभास िी ऩरयबाषा उसि परिाय िी ऩी ऩी री फनाइए I िफीय दस िा जीिन ऩरयचम चारट ऩय भरखखए I फाढ़ िा दखा -सना हार िा िणटन िीपजए I
यनमनभरखखत ऩय यनफनध भरखखए- फयोजगायी िी सभसमा एि यनिायण
जीिन भ िमपमरय िा भहति
रड़िा रड़िी एि सभान
ऩमाटियण
SCIENCE
1Prepare power point presentation on following topics
a)Diversity in living organisms
b)Tissues
2Write an assignment on food production(collect information from newspapersmagazines etc)
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q1 Define the following with units
1 Constant speed 2 instantaneous speeds
3 Average speed 4 Distance
5 Displacement 6 Speed
7 Velocity 8 Vector
9 Scalar 10 Frame of reference
11 Acceleration 12 Magnitude 13 Slope
Q 2 Speed conversions- in following units ms kmh and milesh
1 30times108
ms 2 71 mih 3 102 kmh
4 27 ms 5 800 kmh
Solve the following problems
3 You hear thunder 41 seconds after seeing the lighting how many meters away was the lighting strike Sound travels at 343 ms
4 On another occasion you see a lighting strike 220 meters away from you How long will it take for you to hear the sound
5 If a ball rolls 6 meters across the floor in 54 seconds what is its average speed (Ms)
6 During the gas crisis of the 1970rsquos the posted highway speed limit was dropped to 885 kmh (55mih) across the country By the 1990rsquos many stretches of highway had put the posted speed limit back to 1046 kmh (65 mih) The distance from Bangor to Portland is 21km how much time can be saved by traveling at the greater speed limits
7 The distance between the pitching mound and home plate is 1845 meters If Ram throws his fast ball at an average speed of 425 meters per second how long does the batter have to see the ball before it files past him
8 It is 4281 km from Seattle to Hawaii An airliner makes this journey is 45 hrs What was the planersquos average speed (Ms)
8 Chief Boolie the jungle dweller is out hunting for dinner when a coconut falls from a tree and lands on his toe If the nut fell for 14 s how fast was it travelling when it struck his toe (ms kmh mih)9 A caterpillar crawling up a leaf slows from 075 cms to 050 cms at a rate of -005 cms
2 How long does it take the caterpillar to make
the change
9 What is the acceleration of a car that increases its velocity form 70 to 100 ms in 5 seconds
10 A car is travelling at 75 kmh 30 seconds later the car is travelling at 75 kmh what is the acceleration of the car
11 Motion graphs- look at the graphs below and answer the following questions
Each graph depicts the motion of a car For each graph or each part of a graph determine of the car is
Moving at a constant velocity
Not moving (at rest)
Speeding up
Slowing down
A B
Motion
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
C D
E F
G H
12 Another graph- answer the following questions based on the graph below
A Find the slope for each section of the graph B During which time interval is the object moving the fastest C What is the displacement at 20 seconds Distance travelled D What direction is the object travelling at 28 seconds
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
1 Answer the following questions based on the graph below
A In which section the car accelerating from rest
B In which section is the carrsquos accelerating negative
C How far does the car travel during section ldquobrdquo
D What is the accelerating of the car in each section
14 Refer the displacement- time graph of a cartrsquos motion
A In which section(s) is the cart accelerating B In which section (s) is the cart not moving C In which section(s) is the cart moving backwards D In which section(s) is the cartrsquos instantaneous velocity at any time equal to its average velocity E What is the velocity of the cart in these sections
a-b c-d e-f f-g F How far does the cart move in section b-c and e-f
2 A 200 meter long train crosses a 400 m long bridge with a speed of 36 kmh calculate the time taken by the train to cross the bridge Ans 1 min
3 A train travels the first 30 km of 120 km track with a uniform speed of 30 kmh what should be the speed of the train to cover the remaining distance of the track so that its average speed is 60 kmh for the entire trip
Ans 90 kmh
4 A sound is heard 5 sec later than lighting is seen in the sky on a rainy day Find the distance of location of the light Given speed of sound is equal to 346ms
Ans 1730 m
Motion-1
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
5 Akash drove is his car with speed of 20 kmh while going his college When he returns to his home along the same route the speed of the car is 30 kmh calculate the average speed of the car during the entire journey
Ans 24 kmh
6 A nonstop bus goes form one station to another station with a speed of 54 kmh the same bus return form the second station to first station with a speed of 36 kmh find the average speed of bus during entire journey Ans 432 kmh
7 A bus starts form rest and attains a speed of 36 kmh in 10 min while moving with uniform acceleration Calculate the acceleration of the bus Ans 160 ms
2
8 a car start from rest and attains a velocity of 10 msec in 40 sec the driver applies breaks and slows down the car to 5 msec in 10 sec find the acceleration the car in both the case Ans 025 ms
2 -
05ms2
9 A car starts from rest requires a velocity of 54kmh in 2 mins Find (I) Acceleration (II) Distance travelled by the car Ans 18 msec
2 900 m
10 A car is travelling with a speed of 36 kmh the driver applies the break and retards the car uniformly The car is stopped in 5 sec find (I) the retardation of the car and (II) distance travelled before it is stopped after applying the brakes Ans -2 ms
2 25 m
11 An athlete completes 100 m race in 10sec he covers 5 m in first second 25 meter in next 3 sec 50 meter in next 5 sec and remaining distance in 1 sec find
A Average velocity on the athlete
B Maximum velocity of the athlete Also draw the distance- time and velocity ndashtime graph of the motion of the athlete
Ans10msec 20 msec
12 A stone is thrown vertically upward with a speed of 5 msec how high does the stone rise before returning back to the earth (g= 98msec
2) Ans 128 m
13 A train is travelling at a speed of 90 kmh breaks are applied so as to reduce a uniform retardation of 05 msec
2 Find how far the train will go before it is brought to rest Ans
625 m
14 A ball is dropped gently form a height of 20 m if its velocity increases uniformly at the rate of 10 ms2 with what velocity will it strike the ground After what time will it strike the ground Ans 20 ms 2 sec
15 An aircraft satellite is moving in a circular orbit of radius 42250 km calculate its speed if it take 24 hours to revolve around the earth Ans 307 kms
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-10
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Class X
LINEAR EQUATION IN TWO VARIABLES
Graph G1 Solve graphically 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
[-2 3]
G2 Find graphically the coordinates of the vertices of a triangle whose sides are - y = x y = 0 and 2x + 3y = 30 G3 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis G4 Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y = - 3]
G5 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axis
Find the area of the shaded region [(14) 8 sq units]
G6 Solve graphically Find the vertices of the triangle formed by the
lines and x-axis Solve graphically
G7 5x ndash y = 7 x ndash y = - 1
G8 3x + y + 1 = 0 2x ndash 3y + 8 = 0
G9 3x ndash y = -4 5x + y = -4
G10 x + y = 3 2x +5y = 12
G11 3y = 17 -2x 2x ndash 3y = -1
G12 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0
G13 Find graphically the coordinates of the vertices of a triangle whose sides have the equations y = x y = 0 and
2x + 3y = 30
G14 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G15 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 0 obtain the vertices of the triangle so obtained G16 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G17 Draw the graph 2x + y = 6 and 2x ndash y + 2 = 0 Shade the region bounded by these line and x-axisFind area of
the shaded region
G18 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 4 = 0
obtain the vertices of the triangle so obtained
G19 Solve graphically 3x + 5y = 19 2x ndash y = 4
G20 Draw the graphs of the equations x ndash y + 1 = 0 and 3x + 2y ndash 12 = 0 Determine the coordinates of the
cocordinates
of the vertices of the triangle formed by these lines and the x-axis and shade the triangular region
G21 Solve graphically 3x + y + 1 = 0 2x ndash 3y + 8 = 0
Solve graphically
G22 5x ndash y = 7 x ndash y = - 1 [2 3]
G23 3x + y + 1 = 0 2x ndash 3y + 8 = 0 [-1 2]
G24 3x ndash y = -4 5x + y = -4 [-1 1]
G253x + y = 3 2x +5y = 12 [1 2]
G26 3y = 17 -2x 2x ndash 3y = -1 [4 3]
G27 2x +y ndash 3 = 0 2x ndash 3y ndash 7 = 0 [2 -1]
G28 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
G29 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y
= 30
G30 Solve graphically 3x + y ndash 11 = 0 x ndash y ndash 1 = 0Shade the region bounded by these lines and y axis
G31 Draw the graphs of the following equations - 2x ndash y ndash 2 = 0 4x + 3y ndash 24 = 0 y + 3 = 0 obtain the vertices of the triangle so obtained G32Solve graphically - 2x + 3y + 5 = 0 3x ndash 2y ndash 12 = 0 [x = 2 y
= - 3]
G33 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0 [-2 3]
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
K1 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K2 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K3 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K4 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K5 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
K6 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
K7 Find p and q for infinite f solutions 2x ndash y = 5 (p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
K8 For what values of a and b will the equations 2x + 3y ndash 7 = 0 and
(a + b + 1)x + (a + 2b + 2)y = 4(a + b) + 1 have an infinite number of solutions [a = 3 b = 2]
K9 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
K10 For what value of k will the pair of liner equations- kx + 3y = k ndash 3 12x + ky = k k ne plusmn 6+
K11 Find the values of k for which the pair of equations 2x + ky = 1 3x ndash 5y = 7 has a unique solution [-10]
Solve the pairs of equations by using the method of cross-multiplication -
K12 Find graphically the coordinates of the vertices of a triangle whose sides have the eq y = x y = 0 and 2x + 3y =
30
K13 Find p and q for which system of linear eq has infinite f solutions 2x ndash y = 5
(p + q)x ndash (2q ndash p)y = p + 2q + 6 [p = q =3]
SOLVE
S1 Solve (cross-multiplication method x + y = a + b x + y = 2
a b a2 b
2 [a
2 b
2]
S2 Solve method of cross-multiplication a - b = 0 ab2 + a
2b = a
2 + b
2
x y x y [a b]
S3 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S4 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S5
S6
S8
S9
S10
S11
S12
S13
S14
S15 Solve
S16 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
a a + b a ndash b b
S17 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S18 Solve for x and y ax + by = 1 bx + ay = 2ab
a2 + b
2
S19 Solve for x and y 217x + 131y = 913 131x + 217y = 827 [ x = 3 y = 2
S20olve (cross multiplication method ax + b y = a + b ax ndash by = a ndash b
S21 Solve 2x ndash 3y + 13 = 0 3x ndash 2y + 12 = 0
S22 Solve (cross-multiplication methodx + y = a + b x + y = 2
a b a2 b
2
S23 Solve - 813x +2y
= 27 25x ndash y
= 125
S24 Solve - 1 + 1 = 3 1 - 1 = 5
3x 2y 5x 3y
S25 Solve - 5 + 3 = 13 4 - 7 = 1
x + y x ndash y x + y y ndash x
S26 Solve for x and y(by cross multimethod) ax + by = 1 bx + ay = 2ab (a2 + b
2)
S27 Solve - 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y S28 Solve - 27
3x +2y = 9 25
x ndash y = 125
S29 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S30 Find a and b for infinite solutions -
3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a)y = 3b
S31 Solve the equation - 23x ndash 17y + 11 = 0 31x + 13y ndash 57 = 0
S32Solve for x and y xy = 1 xy = 1
x + y 2 x ndash y 6 x + y ne 0 x ne y
S33 Solve - x + y = a x - y = b
a a + b a ndash b b
S34 Solve - 44 + 30 = 10 55 + 40 = 13
x + y x ndash y x + y x ndash y
S35 Find a and b for infinitely many solutions 2x + 3y = 7 (a+b)x + (2a minusb) y =3(a+b+1)
S36 Find the value of k so that the following system of equations has no solution 3x + 2kx + 5y = 4 3x ndash 7y = 11
S37 Find the nature of solutions of 3x ndash 5y = 8y ndash 4 2x ndash 11y ndash 14 = 0
S38 In an equation - 2x ndash 5y = 7y + 11x ndash 5 write x in term of y and find whether ( 2 ndash 3) is the solution of the
equation
S39 Solve - 4 + 3 = 11 5 + 4 = 14
x + y x ndash y x + y x ndash y
S40 Solve 148x + 231y = 527 231x + 148y = 610
S41 Find the value of p and q for which system of linear equations has infinite solutions
2x ndash y = 5 (p + q)x ndash (q ndash p)y = p + 2q + 2
S42 Solve (by cross-multiplication method) ax + b y = a2 + b
2 2x + 3y = 2a + 3b
S43 Given below are three equations Two of them have infinite solutions and two have a unique solutionState the two pairs 3x ndash 2y = 4 6x + 2y = 4 9x ndash 6y = 12 S44 Solve the pair of equation
5 + 1 = 2 6 ndash 3 = 15
2x ndash 1 3y ndash 2 2 x ndash 1 3y ndash 2
S45 Find k for unique solution 3kx + 5x - 3y = 7 4x + 7y = 8 S46 Solve 5 + 3 = 13 4 7 = 1 x + y x ndash y x + y x ndash y
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
S47 Solve - 27 3x +2y
= 9 25x ndash y
= 125
S48 Find a and b for infinite solutions 3x ndash (a + 1) y = 2b ndash 1 5x + (1 ndash 2a) y = 3b S49 For what value of k the pair of equations has no solution 2x + 3y = 5 kx ndash 5y = 7 [ - 103]
S50 Solve 2(x + 3) + 3(y ndash 1) = 8 3(x- 2) + 2( y + 2) = 3 [1 1]
S51 mx ndash ny = m2 + n
2 x ndash y = 2n [ m + n m ndash n]
S52 Find k for unique solution 3kx + 2y = 7 4x + ky = 8 [83]
S53 Solve - x + y = a x - y = b [ndash(a3 b
3) b
2a
2ab]
a a + b a ndash b b
S53 Find k for no solution 3x +2y = 5 x + 5kx +2y = 1 [25]
S54 Solve - 44 + 30 = 10 55 + 40 = 13 [83]
x + y x ndash y x + y x ndash y
S55 Solve for x and y ax + by = a ndash b bx ndash ay = a + b [11]
S56 Solve 2x + 3y = 11 and 2x ndash 4y = ndash 24 and hence find the value of lsquomrsquo for which y = mx + 3
S57 Solve by cross multiplication 6(ax + by) = 3a + 2b 6(bx ndash ay) = 3b ndash 2a S58 Solve (a ndash b)x + (a + b)y = a
2 ndash 2ab ndash b
2 (a + b) + (a + b)y = a
2 + b
2
S59Solve the following system of equation 0
22
y
b
x
a bay
ab
x
ba
22
WORD PROBLEMS
W1 The combined railway fare for a journey undertaken by a family of 4 members traveling in 3-tier coach and a
family of 3 members traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first
family had 1 member less while the second had 1 member more What was the fare for a couple for the same
journey in 2-tier [ Rs 1800]
W2 The difference of two numbers is 3 and the sum of one-third is 5 Find the numbers [9 6]
W3 The fatherrsquos age is 3 times the sum of ages of his two children After 5 years his age will be twice the sum of
ages of the two children Find the age of the father [45]
W4 4 kg of apples and 3 kg of guava together cost Rs 3650 while 3 kg of apples and 2 kg of guava cost
Rs 2650 Find the price per kg of apples and guava [Rs 650 Rs
350]
W5 A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits
interchange their places Find the number
[24]
W6 There are some lotus flowers in a lake If one butterfly sits on each flower one butterfly is left behind If two
butterflies sit in each flower one flower is left behind What is the number of flowers What is the number of
butterflies [F = 3 B = 4]
W7 The sum of a two-digit number and the number obtained by reversing the order of its digit is 154If the two
digits of the given number differ by 4 find the number
W8 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total selling price of the tables was equal to the total selling price of the chairs
Find the cost price of each chair
W9 The ratio of incomes of two persons is 9 7 and the ratio of their expenditures is 4 3 If each of
them saves Rs 2000 yearly find their annual incomes [Rs 18000Rs 14000]
W10 A two digit number is obtained by either multiplying the sum of digits by 8 and adding 1 or by multiplying
the difference of the digits by 13 and adding 2 Find the number [41]
W11 8 men and 12 boys can finish a piece of work in 10 days while 6 men and 8 boys can finish it in 14 days Find
the time taken by 2 boys and 3 men to complete the same work [140280]
W12 Students of a class are made to stand in rows If one student is extra in a row there would be two rows less If
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
one student is less in a row there would be three rows more Find the total number of students in the class
[60]
W13Nivedita has 440 laddo and 140 barfis She wants to sack them in such a way that each stack has the same
number and they take up the least area of the tray What is the number of burfis that can be placed for this
purpose
W14 The hypotenuse of a right angled triangle is 3radic10 cm If the smaller side is tripled and the longer side doubled
new hypotenuse will be 9radic5 cm How long are the sides of the triangle
W19A two-digit number is 4 times the total of the digits therein If 18 is added to the number the digits interchange their places Find the number W20 A man travels 600 km partly by train and partly by car If the covers 400 km by train and the rest by car it
takes him 6 hours and 30 minutes But if the travels 200 km by train and the rest by car he takes half an hour
longer Find the speed of the train and car
W21 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both
the numerator and denominator it becomes frac12 Find the fraction
w22 Four times Brsquos age exceeds Arsquos age by 20 years and one third of Arsquos age is less than Brsquos age by two years
Find their ages
W23 The coach of a cricket team buys 3 bats and 6 balls for Rs 3900 Later she buys another but and 2 more balls of the same kind for Rs 1300 Represent this situation algebraically and geometrically W24 The larger of two supplementary angles exceeds the smaller by 18 degrees Find them W25 Ravi tells his daughter Seven years ago I was seven times as old as you were thenAlso three years from now I shall be three times as old as you will be Represent this situation as a pair of linear equations in two variables and solve W26 Suniti can row downstream 20 km in 2 hours and upstream 4 km in 2 hours Find her speed of rowing in still water and the speed of the current W27 In an auditorium seats are arranged in rows and columns The number of rows was equal to the number of
seats in each row When the number of rows was doubled and the number of seats in each row is reduced by 10
the total number of seats increased by 300 Find -(i) the number of rows in the original arrangement (ii) The
number of seats in the auditorium after re-arrangement
W28 Anubhav sold a table and a chair for Rs 2100 thereby making a profit of 10 on the table and 25 in the
chair If he had taken a profit of 25 on the table and 10 on the chair he would have got Rs 2130 Find the cost
price of each
W29 The railway fare for a journey by a family of 4 members traveling in 3-tier coach and a family of 3 members
traveling in 2-tier coach is Rs 5100 The total fare would have been Rs 300 more if the first family had 1 member
less while the second had 1 member more What was the fare for a couple for the same journey in 2-tier
[ Rs 1800]
w30 Fatherrsquos age is 3 times the sum of ages of his 2 children After 5 years his age will be twice the sum of ages of
two children Find the age of father [45 years]
w31 The boat goes 30 km upstream and 44 km downstream in 10 hours In 13 hours it can go 40 km upstream
and 55 km downstream Determine the speed of stream and that of the boat in still water [Speed of stream =
3kmhr speed of boat = 8 kmhr]
W15 Five years ago Nuri was thrice as old as Sonu Ten years later Nuri will be twice as old as Sonu Find their ages
Q212 A Pw1W16Part of monthly hostel charges is fixed and the remaining depends on the number of days one has taken food in the
mess When a student A takes food for 20 days she has to pay Rs 1000 as hostel charges whereas a student B who takes
food for 26 days pays Rs 1180 as hostel charges Find the fixed charges and the cost of food per day
W17 Yash scored 40 marks in a test getting 3 marks for each right answer and losing 1 mark for each wrong answer
Had 4 marks been awarded for each correct answer and 2 marks been deducted for each incorrect answer then Yash
would have scored 50 marks How many questions were there in the test
W18 Places A and B are 100km apart on a highway One car starts from A and another from B at the same time If the
cars travel in the same direction at different speeds they meet in 5 hours If they travel towards each other they meet
in 1 hour What are the speeds of the two cars
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
w32 In a rectangle if the length is increased by 3 meters and breadth is decreased by 4 metres the area of the
rectangle is reduced by 67 square metres If length is reduced by 1 metre and breadth is increased by 4 metres
the area is increased by 89 sqmetres Find the dimensions of the rectangle [L = 28 m B = 19 m]
w33 2 men and 7 boys can do a piece of work in 4 days The same work is done in 3 days by 4 men and 4 boys
How long would it take one man and one boy to do it [Man - 15 days Boy - 60 days]
w34 The age of A is 3 times the age of B 10 years later age of A will be twice the age of BFind their ages
W35 A two-digit number is 4 times the total of the digits there in If 18 is added to the number the digits
interchange their places Find the number [24]
W36 A shopkeeper purchased 5 chairs and 3 tables for Rs 1500 He sold the chairs at a loss of 15 and the tables
at a profit of 19 This way the total SP of the tables was equal to the total selling price of the chairs Find the
CP of each chair
W37 The sum of the numerator and denominator of a fraction is 4 more than twice the numerator If the
numerator and denominator are increased by 3 they are in the ratio 2 3 Determine the fraction
W38 The present age of a father is equal to the sum of the ages of his 5 children 12 years hence the sum of the
ages of his children will be twice the ages of their father Find the present age of the father
W39 A man travels 600 km partly by train and partly by car If he covers 400 km by train and the rest by car it
takes 6 hours and 30 minutes But if he travels 200 km by train and rest by car he takes half an hour longer Find
the speed of the train and that of car
W 40 Two places A and B are 80 km apart from each other on a highway A car stats from A and another from B
at the same time If they move in the same direction they meet in 8 hours and if they move in opposite directions
the meet in 1hour and 20 minutes Find the seed of the cars
W41 A train covered a certain distance at a uniform speed If the train would have 6 kmhr aster it would have
taken 8 hrs less than the scheduled time And if the train were slower by 6 kmhr it would have taken 12 hours
more than the scheduled time Find the length of the journey W42 Two years ago a father was five times as old as his son Two years later his age will be 8 more than three
times the age of the son Find their present ages
W43 A man sold a chair and a table together for Rs1520 there by making a profit of 25 on chair and 10 on table By selling them together for Rs1535 he would have made a profit of 10 on the chair and 25 on the table Find the cost price of each W44 Reena has pens and pencils which together are 40 in numbers If she has 5 more pencils and 5 less pens then
number of pencils become 4 times the number of pens Find the original number of pens and pencils
[Pens=13Pencils=27]
W45 On selling a TV at 5 gain and a fridge at 10 gain a shopkeeper gain Rs 2000 But if he sells the TV at
10 gain and the fridge at 5 loss He gains Rs 1500 on the transaction Find the actual price of TV and fridge
[Rs 20000Rs1000]
W46 A number consists of two digits whose sum is 5 When the digits are reversed the number becomes greater
by 9 Find number
W51 A fraction becomes 13 if 1 is subtracted from both its numerator and denominator If 1 is added to both the
numerator and denominator it becomes frac12 Find the fraction [ 37]
W47 If 2 is added to the numerator of a fraction it reduces to frac12 and if 1 is subtracted from the denominator it
reduces to 13Find the fraction [3 10]
W48 A is elder to B by 2 years Arsquos father F is twice as old as A and B is twice as old as his sister S If the age of the
father and sister differ by 40 years find the age of A [26 years]
w49 The tenrsquos digit of a two digit number is three times the unit digit The sum of the number and the unit digit
is 32 Find the number
W51 Raju attended 40 questions in his class test One mark was awarded for every right answer and 1
mark was deducted for every wrong answer He got 4 questions correct and 3 questions wrong during
his first session Find the number of questions he attended
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
W52 The cost of 2 kg of apples and 1kg of grapes on a day was found to be Rs 160 After a month the cost of 2 kg
of apples and 1kg of grapes is Rs 300 Represent the situation algebraically and geometrically
CH- polynomials
Submission Date-22 June 2016
Q1) Divide 6x3 ndash x2 ndash 10x -3 by 2x ndash 3
Q2)34x ndash 22x3 ndash 12x4 ndash 10x2 ndash 75 by 3x + 7
Q3) 9y4 ndash 4y2 + 4 by 3y2 ndash 4y + 2
Q4) 6z2 ndash 6 ndash 7z2 + 4z4 ndash 27z ndash 27z3 by 2z2 ndash 3
Q5) Show that x2 + 4 is a factor of x4 + 9x2 + 20
Find all the zeroes of-
Q6) x2 ndash x ndash 30
Q7) x2 + x ndash 2
Q8) x 3 ndash 6x2 ndash 7x
Q9) x3 ndash 3x2 ndash 10x + 24
Q10) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 2 - 14 - 7 respectively
Q11) Using Division Algorithm find whether 2 ndash x2 is a factor of x4 ndash 5x + 6 or not
Q12) Divide 4y3 ndash 3y + 8y2 + 5 by 2y2 ndash y + 1 and write the quotient
Q13) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q14) If α and β are the zeros of f ( x ) = x2 ndash px + q find the value of α 2 + β2
Q15 If the polynomial is divided by another polynomial
the remainder comes out to be x+a Find the value of k and a
Q16) Find all the zeros of if you know that two of its
zeros are radic2 and - radic2
Q17) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of1α + 1β
Q18) Find the LCM of 245 and 125
Q19) Find zeroes of x 3 ndash 6x2 ndash 7x
Q20) Find the zeros of x3 ndash 3x2 ndash 10x + 24
Q21) If α and β are the zeros of f ( x ) = 3x2 ndash 7x - 13 find the value of α 3 + β3
Q22) Divide 2x3 ndash 3x2 ndash 10x -3 by 2x +1
Q23) Divide 3x3 ndash 3 by 5x + 6
Q24) Obtain all other zeroes of 3x4 + 6x3 ndash 2x2 ndash 10x ndash 5 if two of its zeroes are
5 and ndash 5
Q25) Construct a cubic polynomial whose zeros are 12 5 and 11
Q26) Construct a quadratic polynomial whose zeros are 25 and 711
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q27) Find the zeros of the polynomial ( x + 2 ) ( 2x ndash 1 ) ( 3x ndash 2 )
Q28) Find the zeroes of x2 ndash 12 and relationship between zeroes and coefficient
Q29) If α and β are the zeros of f (x) = 3x2 ndash 2x - 5 find the value of α 3 + β 3
Q30) Construct a cubic polynomial whose zeroes are 23 45 and 3
Q31) Divide 3x3 ndash x2 ndash 2x - 4 by 2x ndash 3
Q32) On Dividing x3 ndash 3x2 + x + 2 by a polynomial g(x) the quotient and remainder
were x ndash 2 and - 2x + 4 respectively Find g(x)
Q33)Two zeroes of cubic polynomial ax3 + 3x2 ndash bx ndash 6 are ndash1 and ndash2 Find the 3rd
zero and value of a and b
Q34) Find a quadratic polynomial whose zeroes are 5 + radic2 and 5 ndash radic2
Q35) Construct a quadratic polynomial whose zeros are 34 and -52
Q36) Form a quadratic polynomial whose zeroes are 2 and 35
Q37) If α and β are the zeroes of the quadratic polynomial f(x) = kx2 + 4x + 4
such that α 2 + β 2 = 24 find k
Q 38) In the figure if the coordinates of the points A and B are (-10) and (30) respectively Find
the Polynomial
Q39) If p(x) = 3x2 ndash 6x + 3 find the sum and product of the zeroes Form a
polynomial having sum and product as 3α + 2β and 2α + 3β
Q 40)Find the value of lsquokrsquo for which x4 + 10x3 +25x2 +15x + k is exactly divisible by
x + 7
Q41)Divide 4x3 + 2x2 + 5x ndash 6 by 2x2 + 3x + 1 and find quotient and remainder
Q42) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 3 - 5 - 11 respectively
Q43) Form a cubic polynomial with sum product and sum of the products of its
zeroes taken two at a time as 4 - 12 - 3 respectively
CH - Real Numbers
Submission Date - 22June 2016
Using Euclidrsquos Division Algorithm find the HCF of-
Q1) 65 and 170
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q2) 1264 and 82
Q3) 2165 and 272
Q4) Using Euclidrsquos Division Algorithm show that the cube of any positive integer is of the form 9p
9p + 1 or 9p + 8 where p is some integer
Find the HCF and LCM of the given integers using the prim factorization method
Q5) 25 50 145
Q6) 50 160 and 400
Q7) 40 110 and 360
Q8) 80 90 and 250
Q9) Check whether 4n where n is a natural number ends with the digit zero
Q10) Prove that radic7 is an irrational number
Q11)state whether the following rational number will have a terminating Decimal expansion or a
non-terminating repeating decimal expansion
(i) 720 (II) 313 (III) 8125 (IV) 58 (V) 712
Q12) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q13) If HCF (612 1314) = 18 find the LCM (612 1314)
Q14) Prove that radic23 is an irrational number
Q15) State Fundamental Theorem of Arithmetic
Q16) Prove that radic11 is an irrational number
Q17) Prove that 2 +radic7 is an irrational number
Q18) Prove that 3 - radic7 is an irrational number
Q19) Prove that 4+ 3radic7 is an irrational number
Q20) Prove that radic7 +5 is an irrational number
Q21) Prove that 1radic5 is an irrational number
Q22) Prove that radic13 is an irrational number
Q23) Find the smallest number which when increased by 17 is exactly divisible by both 520 and
468
Q24) State Euclidrsquos Division Lemma
Q25) Using Euclidrsquos Division Algorithm find the HCF of 65 and 170
Q26) Using Fundamental Theorem of Arithmetic find the LCM of 4052 and 12576
Q27) Show that any positive integer is of the form 4p 4p +1or 4p + 2 4p +3(p is some integer)
Q28) show that square of any positive integer is of the form 3m 3m+1 (p is some integer
Q29) Prove that radic7 is an irrational number
Q30) without actually performing division state whether
will have a terminating decimal
expansion or a non-terminating repeating decimal expansion
Q31) Given LCM (306 657) = 22338 find HCF(306 657)
Q32) Use Euclidrsquos Division Lemma to find the HCF of 135 and 225
Q33) Show that 3radic2 is irrational
Q34) Prove that 3 + 2 radic5 is irrational
Q35) A sweet seller has 420 kajubarfis and 130 badambarfis She wants to stack them in such a
way that each stack has the same number and they take up the least area of the tray What is the
maximum number of barfis that can be placed in each stack for this purpose
Q36) Use Euclidrsquos division algorithm to find the HCF of (i) 135 and 225 (ii) 196 and 38220 (iii) 867
and 255
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q37) Show that any positive odd integer is of the form 6q + 1 or 6q + 3 or 6q + 5 where q is some
integer
Q38) Find the LCM and HCF of 6 and 20 by the prime factorization method
Q39) Find the HCF of 96 and 404 by the prime factorization method Hence find their LCM
Q40) Find the HCF and LCM of 6 72 and 120 using the prime factorization method
Q41) Find the value of y if the HCF of 210 and 55 is expressible in the form 210 x 5 + 55y
Q42) Prove that no number of the type 4K + 2 can be a perfect square
Q43) Express each number as a product of its prime factors (i) 140 (ii) 156 (iii) 3825 (iv) 5005 (v)
74
Q44) There is a circular path around a sports field Sonia takes 18 minutes to drive one round of
the field while Ravi takes 12 minutes for the same Suppose they both start at the same point and
at the same time and go in the same direction After how many minutes will they meet again at the
starting point
Q45) Let p be a prime number If p divides a2 then p divides a where a is a positive integer
Q46) Show that 5 ndashradic 3 is irrational
Q47) The following real numbers have decimal expansions as given below In each casedecide
whether they are rational or not If they are rational and of the form p q what can you say about
the prime factors of q
(i) 43123456789 (ii) 0120120012000120000 (iii) 43123456789
Social Studies
1PROJECTA COMPARATIVE STUDY OF THE CITIES LONDON AND MUMBAI
2SURVEYON STATE LEGISLATIVE ASSEMBLY ELECTIONS
3SUBJECTS INCLUDED IN THE UNIONSTATE AND CONCURRENT LISTS
Subject ndash Computer
1 What is Grid in Autodesk 2 What is the difference between orthogonal and non-orthogonal views 3 What are the ways to create perspective view in a viewport
4 Write the steps to create object 5 What is transform 6 Name some video films where 3D animation has been used Give a brief
report of each with photograph 7 Why do we need special glasses to watch a 3D movie Explain
8 What are the various applications of 3D animation
Note ndash Holiday Homework should be submitted in a separate folder in A4 size
paper
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
SUB- हिनदी
िा ndash दसिी जभा ियन िी तायीख - 00200250
पर 25 - सऻा सिटनाभ औय विशषण िी ऩरयबाषा उनि परिाय औय उदाहयण भरखखए| )गहिामट ऩपसतिा भ भरखखए(
पर 20 - सबाषचर फोस जीिन ऩरयचम एि उऩरपबधमाा |
पर 20 - गरोफर िाभभलग िायण औय परबाि |
)चचतर सहहत 4A सीर ऩय भरखखए(
Science
CHEMICAL REACTIONS AND EQUATIONS
1 On what chemical law balancing of chemical equation is based
2 Identify the compound oxidized in the following reaction
H2S (g) + Cl2 S (s) + HCl (g)
3 Give an example of photochemical reaction
4 Name the reaction which forms insoluble salts
5 Name the product obtained and type of reaction given below
Na2SO4 + BaCl2 _________ + ________
6 Explain the following in terms of gain or loss of oxygen with one example
a Oxidation
b Reduction
7 A copper coin is kept in a solution of silver nitrate for some time what will
happen to the coin and the colour of the solution
8 Why do we apply paint on iron articles
9 What happens chemically when quicklime is added to water
10 What is rancidity Write the common methods to prevent it
11 What is corrosion State the conditions necessary for rusting of iron How
Rusting is harmful
12 Name the type of reactions in the following cases
a Garbage producing foul smell
b Burning of natural gas
c Carbon dioxide gas passed through lime water
13 Blue crystals of copper sulphate on heating in a dry test tube become
ColourlessGive reasons
14 a Why can not a chemical change be normally reversed
b Why is it always essential to balance a chemical equation
c What happens when CO2 gas is passed through lime water and why does it
disappear on passing excess CO2
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
d Can rusting of iron take place in distilled water
HOTS QUESTIONS (SOLVED)
Q1 A water insoluble substance X on reacting with dilute H2SO4 released a colourless and
odourless gas accompanied by brisk effervescence When the gas was passed through water the
solution obtained turned blue litmus red On bubbling the gas through lime water it initially
became milky and milkiness disappeared when the gas was passed in excess
a) Identify the substance X
b) Write its chemical equations of the reactions involved
Ans The water insoluble substance X is metal carbonate CaCO3
CaCO3 (S) + H2SO4 (Aq) CaSO4 (Aq) + H2O (Aq) + CO2 (G)
Ca (OH) 2 + CO2 (G) CaCO3 (S) + H2O (L)
(Milky)
CaCO3 (S) + CO2 (G) + H2O (Aq) Ca(OH)2
(Milkiness)
Q2 Ahmad took a magnesium ribbon (cleaned) and burned it on a flame The white powder
formed was taken in a test tube and water was added to it He then tested the solution formed
with red and blue litmus paper What change was seen Why
Ans Red litmus paper turned blue
Blue litmus paper remained blue
This is because the magnesium ribbon on burning in air forms the white magnesium oxide
Which dissolved in water it forms magnesium hydroxide which is Basic in nature
Q3 Give one example of a combination reaction in which an element combines with a
compound to give you a new compound
Ans O2 + 2SO22SO3
8NH3 + 3Cl26NH4Cl
Q4 Marble statues often slowly get corroded when kept in open for a long time Assign a
suitable explanation
Q5 Mohan took pure water for the electrolytic decomposition of water but did not see any
bubbles near the electrodes Explain why
Q 6 Rancidity is a process used for spoiling of cooked food materials like vegetables etc When
kept for long time in open How can you prevent such process to proceed Give an example
Q 7 A substance X displaces Y from its solution in water It is called displacement
reactionWhat other chemical name can be given to such type of reactionsExplain giving an
example
Q 8 A grey coloured metal Z (Atomic weight=65) is used in making dry cell It reacts with
dilHCl to liberate a gas What is the gas evolved Calculate the minimum amount of Z required
to produce 100 ml 0f gas
Q 9 Why is respiration considered an exothermic reaction Explain
Q 10 Why is respiration considered an exothermic reaction Explain
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Q 11 Why are decomposition reactions called opposite of combination reactions Write
equations for these reactions
Q 12 A shiny brown colored element Xlsquo on heating in air becomes a black coloured
compoundName the element Xlsquoamp black the coloured compound formed Also write the equation
CHEMICAL REACTION AND EQUATIONS
1 a) How do you represent chemical changes in chemistry
b) What should you know to write a chemical equation
c) How are reactants and products separated in a chemical equation
2 a) Is it essential to write balanced chemical equation
b) What will happen if it is not balance
c) How do you know that the equation is not balance
3 a) What happens when calcium carbonate is heated
b) What is this reaction called
c) Does decomposition take place only on heating
4 a) What is oxidation
b) Can we call a chemical reaction an oxidation reaction in which hydrogen is removed
c) Give an example of everyday life where redox reaction takes place
5 a) What is corrosion
b) Give an example
c) What are the requirements for corrosion
QUESTIONS
1 What is opposite to combination reaction
2 To pack food articles why do manufacturers flush out oxygen with nitrogen
3 What is spoiling of food called when kept for a long time
4 What is the chemical reaction called in which heat is evolved
5 Silver articles get black coating Name the phenomenon
6 Which gas is evolved when acid is added to lime water
7 When a more reactive metal displaces a less reactive metal in solution what is the reaction
called
8 What sign (+ or -) is given to exothermic reaction
9 Which of the two is a redox reaction
a) Displacement
b) Double displacement
10 What is one important similarity between rusting and burning
WHO AM I
1 I am symbolic representation of a chemical change
2 I am a metal which go on losing weight when constantly exposed to air and moisture
3 I conduct electric current and get a green coating when exposed to humid atmosphere for long
4 My blue colour starts fading when zinc metal is added to my aqueous solution
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
5 I get reduced in a redox reaction
6 I am formed during a chemical change
7 I separate reactants from products when a chemical reaction is represented by a chemical
equation
8 I give a name to the reaction between acids and bases
9 I am a chemical reaction which represents digestion of food in our body
10 I am a process which is used to prevent rusting of iron objects articles
ELECTRICITY
1 Define resistivity of material
2 What is the power of torch bulb rated at 25V and 500mA
3 Why series arrangement not used for connecting domestic electrical appliances in a circuit
4 Which has higher resistance ndash a 50W bulb or a 25W bulb and how many times
5 What is the direction of flow of conventional current
6 Why is it not advisable to handle electrical appliances with wet hands
7 Two electric bulbs marked 100W 220V and 200W 200V have tungsten filament of same
length Which of the two bulbs will have thicker filament
8 How does the resistance of a wire vary with its area of cross section
9 Draw the following symbols
i) Battery ii) Switch closed
iii) Resistor of resistance R iv) Voltmeter
10 A geyser is rated 1500W 250V This geyser is connected to 250V mains Calculate ndash
i) The current drawn
ii) The energy consumed in 50hrs
iii) The cost of energy consumed at Rs 220 per kWh
11 What is the function of an electric fuse Name the material used for making fuse In
household circuit where is fuse connected
12 Write one important advantage of using alternative current How alternating current differ
from direct current
13 What is the difference between short circuiting and overloading
14 a) Draw diagram showing three resistors R1 R2 and R3 in series
b) Two resistors of resistance 4and 12
i) In parallel
ii) In series
Calculate the values of effective resistance in each case
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is the tungsten metal more coiled in the bulb and not installed in straight parallel wire
form
Ans The coiled wire of tungsten increases the surface area of the wire in very less space so as to
emit more light and helps in glowing with more intensity
Q2 Why are fairy decorative lights always connected in parallel
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Ans When the fairy lights are connected in series the resistance offered will be greater and
brightness of the bulbs will be affected But in parallel connection all the bulbs will glow with
same intensity and if any more bulbs gets fused the other bulbs will continue to glow
Q3 What will happen when -
a) Voltmeter is connected in series
b) Ammeter is connected in parallel
Ans a) negligible current will pass through the circuit because the voltmeter has a very high
resistance
b) Ammeter will get damaged due to flow of large amount of current through it because it has
low resistance
1 a) Why is electricity more useful than other forms of energy
b) How is static electricity different from current electricity
c) What are conductors Give examples
d) What are insulators Give examples
2 a) What constitutes an electric current
b) Name the SI unit of electric charge
c) Which is bigger ndash c coulomb of charge or a charge of an electron
d) How much is the charge on an electron Can a charge less than this value exist
e) What is the number of electrons constituting one coulomb of charge
3 a) Define electric current
b) Name the SI unit of current Define one ampere
c) Is electric current a scalar of vector quantity
4 a) What does an electric circuit mean
b) When does the current flow in an electric circuit
c) How can the current be kept continuous in a conductor
d) Which particles constitute current in a metallic conductor
5 a) Define potential difference
b) Name the SI unit of potential difference
c) What is meant by saying that a potential difference between two points in
1volt
d) What is the relationship between work done potential difference and charge
moved
SHORT ANSWER QUESTION
1 Which unit is equivalent of joule coulomb
2 How does the resistance of a wire depend on its length
3 How does the resistance of a wire depend on its area of cross ndash section
4 When are resistors said to be connected in series
5 When are resistors said to be connected in parallel
6 Why is tungsten suitable for making the filament of a bulb
7 Why is tungsten not used as a fuse wire
8 Alloys are preferred over metals for making the heating elements of heater Why
9 How is the direction of electric current related to the direction of flow of electrons in a wire
10 Should the heating element of an electric iron be made of iron silver or nichrome wire
WHO AM I
1 I am equal to the charge carried by 625 x 1018
electrons
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
2 I am the rate of flow of charge through any section of a conductor
3 I am same as coulombsecond
4 I am closed path along which electric charges can flow
5 I am equal to the work done per unit charge from point to another
6 I am same as joulecoulomb
7 I oppose the flow of charges through any conductor
8 I am same as voltampere
9 I relate potential difference with current for a given resistance
10 I am used to measure potential difference between two points of a circuit
LIFE PROCESSES
1 Name the site of photosynthesis
2 What is osmoregulation
3 Name the excretory unit of kidney
4 What is neuron
5 Name the term for transport of food from leave to other parts of the plant
6 Draw the diagram of cross ndash section of a lead and label the following in it
a Chloroplast
b Guard cell
c Lower epidermis
d Upper epidermis
7 What do you mean by double circulation of blood
8 Explain why Bile juice does not contain any digestive enzymes yet it is
essential for digestion
9 How would non ndash secretion of hydrochloric acid in our stomach affect food
digestion Explain
10 How does nutrition takes place in Amoeba
11 Draw a diagram of cross section of human heart Show the path of flow of
blood with the help of arrows
12 How water is transported upwards in plants
13 Descried the functioning of nephrons
14
a Draw a diagram of human alimentary canal
b Label the following ndash oesophagus liver gall bladder and duodenum
c What is the function of liver in human body
HOTS QUESTIONS (SOLVED UNSOLVED)
Q1 Why is it necessary to separate oxygenated and deoxygenated blood in
mammals and birds
Ans The mammals and birds are warm-blooded animals which have high energy
needs because they
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
constantly require energy to maintain their body temperature It is necessary to
separate oxygenated
blood and deoxygenated blood in mammals and birds because such a separation
allows a highly
efficient supply of oxygen to the body cells which is required for producing a lot of
energy needed by
them
Q2 How is small intestine designed to absorb digested food
Ans The inner surface of small intestine has millions of tiny finger like
projections called Villi The
presence of villi gives the inner walls of the small intestine a very large surface
area The large inner
surface area of small intestine helps in the rapid absorption of the digested food
SHORT ANSWER QUESTIONS
1 Do plants also need oxygen
2 How does food passes through alimentary canal
3 What regulate the exit of food from the stomach into small intestine
4 In which part of the alimentary canal food is completely digested absorbed
5 In which cell organelle breakdown of pyruvate takes place using oxygen
6 Which structures stop backward flow of blood in atria and ventricles
7 The filtered urine is collected in which part of nephron
8 Which part of the plant excretes some waste substances into the soil
9 Name the process used to remove urea from the blood
10 The process by which evaporation of water from the plants mainly through the
stomata
QUIZ
1 Digestion of starch in humans takes from which organ
2 Absorption of energy takes place in sunlight by the pigment
3 Is chloroplast is non ndash lining structure
4 What is the function of amylase
5 Name the organ responsible for respiration in fish
6 Which is more harmful urea or ammonia
7 Which contains less nitrogenous wastes the renal vein or renal artery
English
1POWER POINT PRESENTATION ON MEDICINAL PLANTS ALONG WITH THE SCRAP BOOK
2 COLLECT LITERARY REVIEWS FROM THE NEWSPAPER AND PREPARE A SCRAP BOOK
3 COMPLETE WORKSHEETS ONE AND TWO
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
CLASS-12
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Class ndash XII BIOLOGY
1Write an assignment on following topics
1Strategies for enhancement in food production
2Microbes in human welfare
NoteCollect extra information and pictures
Subject ndash Computer Science
1 What are the disadvantages of OOP
2 Write a short note on the following (i) Polymorphism (ii) Transitive Inheritance
3 What is the similarity and difference between break and continue
statements 4 What is the difference between abstract class and concrete class
5 Answer the questions (i) and (ii) after going through the following class class Science
char Topic[20] int Weightage
public Science ( ) Function 1
strcpy (Topic ldquoOpticsrdquo ) Weightage = 30
coutltltldquoTopic Activatedrdquo
~Science( ) Function 2
coutltltrdquoTopic Deactivatedrdquo
(i) Name the specific features of class shown by Function 1 and Function 2 in the above example (ii) How would Function 1 and Function 2 get executed
6 In the following program what will be the expected output(s) from the given
options
include ltiostreamhgt include ltstdlibhgt
void main() int N
randomize() for (int I=1Ilt=4I++)
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
if(I2==0) N=1+random(I)
else N=5+random(I)
coutltltN
(i) 5354 (ii) 5254 (iii) 5173 (iv) 6264
7 Answer the questions (i) and (ii) after going through the following program
class mytime
int hour minute second
public
mytime() Function 1
void Details() Function 2
coutltltrdquoThe time is ldquoltlthourltlt rdquoldquo ltlt minute ltlt
rdquordquoltltsecondltltendl
mytime(int x int y int z) Function 3
mytime(mytime ampmt) Function 4
(i) Write the complete function definition for Function 4 (ii) Write statements that would call the Member Functions 1 and 3
8 What do you understand by actual argument and formal argument Explain with example
9 What is the difference between static data members and non-static data members in a class Also give a suitable example in C++ to illustrate both
10Why an object in a copy constructor is passed by reference How is it
invoked 11Write the header files compulsory required to execute the following c++
code
void main()
char Text[40]
strcmp(TextAISSCE)
gets(Text)
12Given the following C++ code answer (i) amp (ii)
class Date
int ddmmyy
public
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Date() function-1
Date(intintint)function-2
Date(Date ampd) funciton-3
void getDate() function-4
~Date() funciton-5
(i) Which function(s) will be invoked if the following statement is
executed (a) Date d1 (b) Date d2(d1)
(ii) Define the coding of function-3 outside the class
13 Obtain the output from the following C++ program as expected to appear on the screen after its
execution
void main()
char Text=rdquoTALenTorGrdquo
for(int i=0Texti+=rsquo0rsquoi++)
if(isalpha(Text[i]))
Texti+=rsquorsquo
else if(isupper(Text[i]))
Text[i]=Text[i]+1
else Text[i]=Text[i+1]
coutltltText
14Find the output of the following program assuming all necessary header files
are included
void Encoding(char E[])
for (int i=strlen(E)igt=0i-=2)
if (E[i]==A || E[i]==E) E[i]=^
else if (isupper(E[i])) E[i]=tolower(E[i]) else E[i]=
void main()
char line[]=KeNdriYA VidyaLAyaThe two words in the string
line are separated by single space
Encoding(line) coutltltlineltltendl
15Define a class employee with the following specifications
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
Private members of class employee
empno integer
ename 20 characters basichrada float
netpay float calculate( ) A function to calculate basic + hra + da with
float return type
Public member functions of class employee havedata( ) function to accept values for empno sname basic
hra da and invoke calculate( ) to calculate netpay dispdata( ) function to display all the data members on the
screen
16Define a class DONOR with the following specifications
Private Donor number integer
Name 20 characters Blood group 2 characters Public
Input( ) A function to accept all the information Output( ) A function to display all the information
Checkgroup( ) A function with char return to return Blood Group Define both the number functions with their given description
17Define a class in C++ with following description
Private Members bull A data member Flight number of type integer bull A data member Destination of type string
bull A data member Distance of type float bull A data member Fuel of type float
bull A member function CALFUEL() to calculate the value of Fuel as per the following criteria
Distance Fuel
lt=1000 500
more than 1000 and lt=2000
1100
more than 2000 2200
Public Members
bull A function FEEDINFO() to allow user to enter values for Flight Number Destination Distance amp call function CALFUEL() to calculate the
quantity of Fuel bull A function SHOWINFO() to allow user to view the content of all the
data members
18Define a class Ticket as per the given details
Private Members
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
a To of type string (for storing destination city)
b From of type string (for storing start city)
c Distance of type integer
d Fare of type float
e BasicFare of type float
f A function InitiateFare() to assign the value of Fare as
BaseFare + DistanceFare where DistanceFare is calculated as
per the distance and Rate per KM as given below
Distance(in KM) RateKM(in Rs)
lt=500 200 RsKm
gt500 amp lt=1000 150 RsKm
gt1000 100 RsKm
Public Members
a A function getdata() to accept the values of all data members
except Fare from user and to call the function AssignFare() to
calculate and assign value of Fare
b A function showdata() to display all data members
Note ndash Holiday Homework should be submitted in a separate 100 pages long note book
XII SUBJECT CHEMISTRY
Write an assignment on the following questions
1 Explain the types of Point defects
2 Write a note on different types of Crystalline solids
3 Differentiate between Crystalline and amorphous solids
4 Explain the Reverse osmosis process
5 State Henryrsquos law and mention its some important applications
6 Brief on Ideal and non -ideal solutions
7 Calculate the mass percentage of Benzene(C6H6) and Carbon tetra chloride (CCl4) if 22 g of Benzene is
dissolved in 122 g of Carbon tetra chloride
8Calculate the temperature at which a solution containing 54 g of Glucose (C6H12O6) in 250 g o water
will freeze( Kf for water = 186 K kg mol-1)
9 State Raoults law for solutions of volatile liquids By taking suitable examples explain the meaning of
positive and negative deviations from Raoults law
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages
10 Brief the following
a) Ferro magnetism
b) Para magnetism
c) Ferri magnetism
d) Anti- ferro magnetism
e) 12-16 compounds and 15-18 compounds
ककषा ndash बारिराब (हिनदी)
पर5- यनमनभरखखत यनफध भरखखए ndash
ि विऻाऩन िा जीिन ऩय परबाि
ख ऩसतिो िा भहतति
ग मिा ऩीढी औय दश िा बविम
घ खरिद भ उबयता बायत
पर 0- हहनदी सभाचाय ऩतर स सिायातभि सभाचायो िा सिरन िीपजए|
पर 0- lsquo तरफन ऩानी सफ सन rsquoविषम ऩय पीचय भरखखए|
MATHS
SNo Chapter Exercise amp QNo Example No
1 Linear Programming 122 Q -1 6789 Miscellaneous Exercise 24568
91011
2 Matrices 33 Q - 5 10 (Part 23) 34 Q - 1617
24 25
3 Determinants
41 Q-47 42 Q - 5910 43 Q - 34 44 Q - 34 45 Q - 1315 46 Q - 12 14 15
33 34
4 Differentiation and
Integration List of formulae hellip
5 Draw a rough sketch Four types of parabolas y=Ix+3I
6 Find the point of intersection
4x2 +4y2 =9 and y2 =4x(X-1)2 +Y2 =1 and x2 +y2 =1
ENGLISH
1 Collect articles reports notices advertisements and posters from newspapers and paste it in your homework notebook
2 Read the novel lsquoThe Invisible Manrdquo
3 Comprehension and note-making passages