INDIAN SCHOOL, AL AIN

HOLIDAY ASSIGNMENTS- 2018-2019

GRADE: 9

MATHS

Project -History of mathematical concept Pythagoras Theorem or History of the number ∏.

1. Number System

2. Polynomials

1 Check, whether 1 is the zero of the polynomial 9x3 - 5x + 20.

2 Factorise

3 Show that x = 1 is a zero of the polynomial 3x3 - 4x2 + 8x - 7.

4 Check whether a polynomial is.

5. Find the degree of polynomial 30x5 - 15x2 + 40.

6. Find the degree of the polynomial 4x+5.

7.

8. Find the remainder when 6x3 - 5x2 + 2x - 9 is divided by (x - 1).

9. Find the zeroes of the polynomial 6x2 – 3.

10. Find the zeroes of the quadratic polynomial x2 – 4x + 3.

11. Find the zeroes of the quadratic polynomial x2 + 7x + 10.

12. If x = 2 is a root of the polynomial f(x) = 2x2 - 3x + 7a, find the value of 'a'.

13. If x = - (1/2) is a zero of the polynomial f(x) = 2x3 + ax2 - 3x + 2 , find the value of „a‟.

14. Find one integral roots of the polynomial f(x) = x3 + 6x2 + 11x + 6.

15. If x = 0 and x = - 2 be the zeros of the polynomial p(x) = x3 - 2x2 + 3ax + b. Find the

values of a and b.

16. Check whether 2, 3, - 1/2 are the rational roots of the polynomial 2x3 + 3x2 - 11x - 6.

17. If x = 4/3 is a root of the polynomial f(x) = 6x3 - 11x2 + kx - 20, find the value of k.

18. Define a polynomial. Are all algebraic expressions polynomials. Explain with the

help of examples.

19. Find all the rational roots of the polynomial f(x) = 2x3 + x2 - 7x - 6.

20. Using remainder theorem find the remainder when x = 0 of the polynomial 2x2 + 7x + 5.

21. Check if x + 3 is a factor of the polynomial 3x2 + 7x - 6.

22. Find the remainder when (x - 1/2) is divided by the polynomial 4x2 -2x+1

23. Show that (x-1) is a factor of x10-1.

24.Find a and b, if x + 1 and x + 2 are the factors of x3 + 3x2 - 2ax + b.

25. What should be subtracted from the polynomial x3 - 6x2 - 15x + 80 so that the result is exactly

divisible by x2 +x - 12. Q 24 What is the value of k, if x - 3 is a factor of the polynomial k2x3 - kx2 +

3kx - k?

26. Evaluate: 233 - 173.

27. Write the expanded form of (3x + 2y - z)2.

28. Factorize the following 8a3 + b3 + 12a2b + 6ab2.

29. Factorize 3 - 12(a - b).

30 Simplify the following

31.Factorize x8 - y8.

32. Using factor theorem factorizes the following expression x3 - 6x2 + 3x +10.

3. Heron’s Formula

Q 1 What is the area of an equilateral triangle of side 2a.

Q 2 What will be the area of a right angled triangle whose base is 12 cm and

hypotenuse is 13 cm. Q 3 Find the area of a triangle whose sides are respectively

150 cm, 120 cm and 200 cm.

Q 4 The perimeter of a triangular field is 540 m and its sides are in the ratio 25:17:12. Find the area of the

triangle.

Q 5 A triangle and a parallelogram are on the same base and have the same area. If the sides of the triangle

are 26 cm, 28 cm and 30 cm, and the parallelogram stands on the base 28 cm, find the height of the

parallelogram.

Q 6 The perimeter of a triangular park is 240 m. If two of its sides are 78 m and 50 m, find the length of the

perpendicular on the side of length 50 m from the opposite vertex.

Q 7 Find the percentage increase in the area of a triangle if its each side is doubled.

Q 8 A skirt is made by stitching 10 triangular pieces of cloth of two different colors, each piece measuring 20

cm, 50 cm and 50 cm. How much cloth of each color is required for the skirt.

Q 9 Find the area of the quadrilateral ABCD in which AD = 24 cm, BAD = 90° and BCD forms an equilateral

triangle whose each side is equal to 26 cm.

Q 10 Find the area of a rhombus whose perimeter is 80 cm and one of its diagonal is 24 cm.

Q 11 Two parallel sides of a trapezium are 60 cm and 77 cm and the others sides are 25 cm and 26 cm. Find

the area of the tra pezium. Q 12 Radha has a piece of land which is in the shape of a rhombus. She wants her

son and daughter to cultivate equal areas of land, thus she divides the area of the rhombus equally amongst

the two. If the perimeter of land is 400 m and of the diagonals is 1 60 m, How much area will each one get?

Q 12 A floral design on the wall is made up of 16 tiles which are triangular, the sides are of the triangle are 9

cm, 28 cm and 35 cm. Find the cost of polishing the tiles at the rate of 50 paise per cm2.

4. Co ordinate Geometry

1. Write the coordinates of a point which:-

(a) Lies on the x-axis and is at a distance of 4 units to the right of the origin.

(b) Lies on the y-axis and is at a distance of y units below the x-axis.

(c) Is at a distance of 3 units from the x-axis and 7 units from the y-axis. [there would be four such points]

2. Draw the graphs of

(a) 3x – 2y = 7 (b) y = -2

on the same pair of axes. Read the coordinates of their point of intersection.

3. Find the point where the line represented by the equation 5y – 3x – 10 = 0 cuts the y-axis.

4. Draw the graph of the line 3x + 4y = 18. With the help of graph find value of y when x = 2. (show this point on

the graph)

5. Draw the graph of y = 2x + 4. Use the graph to find the area between the line and the axes.

6. in which quadrant will the point lie, if:-

(a) Ordinate is 3 and abscissa is – 7

(b) Abscissa is – 10 and ordinate is – 4

(c) Ordinate is 4 and abscissa is – 6.

7. Fill in the blanks:-

(a) The coordinates of the origin 0 are ………………………

(b) The y coordinate of every point on the x-axis is ……………

(c) Distance along the x-axis is called ………………………

(d) Distance along the y-axis is called ………………………

(e) The point (x,y) = (y,x) only if ………………………

5. Lines and Angles

ENGLISH

1. Read a book written by any famous author and write a review of the book in not more than

500 words.

QUESTIONS FROM ‘MOMENTS’.

1. Compare the child’s behaviour before and after he lost his parents in ‘The Lost Child’.

2. Toto was a sharp and active monkey. Substantiate the statement.

3. The grandfather possessed value of childlike simplicity .Do you agree or disagree. Give

reasons.

4. Justify the title Iswaran the storyteller.

5. What human values form the essence of Iswaran’s character?

6. What did the Guru and his disciple see in the kingdom of the fools? Why did the guru decide

to leave the kingdom at once?

7.Describe the strange case brought to the kind’s judgement.

PHYSICS

1. A women travels a distance of 1m towards north then 2m towards east and finally 3m

towards south. Find: (a) the total distance (b) displacement.

2. On a 120km road, a car travels the first 30km with at a uniform speed of 30km/h. How fast

must the car travel for the rest of track so as to have an average speed of 60km/h for the entire

journey?

3. A body travels a distance of 10km with a constant speed of 30km/h and the next 40km at a

constant speed of 50km/h. Find the average speed of the whole journey.

4. A bus is moving with a speed of 18km/h. It comes to rest in 3s on the application of breaks.

Find the retardation, assuming it to be uniform.

5. Name a motion in which an object does not change its speed but its direction of motion

changes continuously. Calculate the velocity of tip of second’s hand of length 1.5cm of a watch.

6. Draw a velocity versus time graph of a stone thrown vertically upwards and then coming

downwards after attaining the maximum height.

7. A body moves with a velocity of 2m/s for 5s. Then its velocity increases uniformly to 10m/s in

next 5s. Thereafter, its velocity begins to decrease at a uniform rate until it comes to rest after

10s.

(a) Plot a velocity – time graph

(b) Mark the portions of the graph to show when the motion of the body is uniform and when it

is non – uniform.

(c) From the graph, find the total distance moved by the body in initial 5s, in initial 12s and in

the last 10s.

8. A person takes time t to go once around a circular path of diameter 2R. What is the speed of

this person?

CHEMISTRY

Answer the following questions.

1.Name the SI unit of measuring temperature.The boiling point of water is 1000 C under normal

atmospheric pressure. Convert this temperature in SI units.

2. Particle size of a substance was 50 nm. Is it solution or colloid or suspension

3. (a)How will you separate the components of ink using chromatography? Explain with the

help of a labelled diagram. (b)What is the function of glass beads present in fractionating

column? (c)Which method out of evaporation and crystallisation is a better technique to

separate sugar from sugar solution? Give reasons also.

4. Why is evaporation called surface phenomenon?

5. (a) Give two reasons for why it is necessary to separate components of mixture of rice and

small stones.

(b)Name the techniques used for:

(i) squeezing out water from clothes in washing machine. (ii) separating components of ink. (c)

Kerosene oil and water do not mix with each other. What is the special name used to describe

such liquids? (d)You have a mixture of ammonium chloride and sodium chloride. Name the

method you will use to separate them and why?

6.A gas jar containing air is placed upside down on a gas jar of bromine vapor. It is observed

that sometime, the gas jar containing air also becomes completely reddish brown.

a) Explain why this happens.

b) Name the process involved.

7. Name the process you would use to separate a mixture of water and alcohol.

8. Sample of vinegar has 40 gram of acetic acid in 140 ml of water. Calculate mass by volume

percentage of the solution.

9. In the following examples state which factor is responsible for the change in rate of

evaporation and how?

i) Clothes dry faster on a windy day.

ii)Wet clothes dry on spreading them.

iii) Clothes dry faster in shade than in shade.

iv) Clothes take longer time to dry on a rainy day.

10. Distinguish in tabular form between solids, liquids and gases under the following

characteristics:

i) density ii) fluidity iii) diffusion iv) kinetic energy of particles at given temperature

11. There are many methods of separation of components of mixture. How will you decide

which is the best method for separating constituents of given mixture?

12 a).How do three states of matter arise?

b)Give reasons for the following (1 each)

i) liquids take up the shape of the container in which they are kept

ii)liquids are more compressible than solids

13. Separate the constituents of mixture comprising of chalk powder, ammonium chloride and

iron pieces.

14. Why does the level of water not change when salt is dissolved in it?

15 The rate of diffusion is of liquids is higher than that of solids. Why?

16. A liquid mixture has two liquids A and B. The boiling point of liquid A is 560C and that of

liquid B is 700 C. Name the process by which these liquids can be separated.

17. Define boiling point of a liquid. Explain what happens when we supply heat energy to water

till it changes its state. What is this energy called?

Multiple choice questions

1. In the determination of melting point of ice, a student observed with the help of a

thermometer that:

a) Ice starts melting and temperature becomes constant

b) Whole ice melts and the temperature starts decreasing

c) Temperature starts rising and ice does not melt.

2.Following sets of observations were made during the determination of boiling point of water

SN Time (min) Temp(o C)

1 5.0 98

2. 7.0 98.5

3. 9.0 99.5

4. 11.0 99.5

5. 13.0 99.5

6. 15.0 100.0

7 17.0 99.5

8 19.0 99.5

From these observations, it may be concluded that the boiling point of water is

A)98.0 0c B)99.0 0 c C)100 0 c D)99.5 0 c

3. Ram want to find the accurate boiling point of water, he should use:

a) Tap water b) distilled water c)salt water d) sugar solution

4. Evaporation of a liquid occurs at

a)its boiling point b)room temperature c)all temperature d)a temperature higher than its

boiling point

5.A student set up an apparatus for the determination of boiling point of a sample of water

supplied to him in the laboratory. He recorded the boiling point as 102 0c assuming that the

thermometer is accurate ,the error in the determined value of boiling point is due to

A) the water may be containing large amount of dissolved air .

B) The water may not be distilled

C)the bulb of the thermometer is not kept above the water surface

D) the bulb of the thermometer is touching the bottom of the vessel containing water.

iii)Complete the practical fair record(4 experiments).

BIOLOGY

Complete the record work (plant kingdom and animal kingdom with notes and diagram)

5. THE FUNDAMENTAL UNIT OF LIFE

1. What is plasma membrane? What are their functions?

2. What are cell organelles?

3. What is cellulose and its functions?

4. What is a Prokaryotic cell? Give an example.

5. What are the advantages of multicellularity ?

6. What are vacuoles? What are their functions?.

7. What is ER ? Name two types of ER. Write its main functions.

8. Write the Function of Chromatin material.

9. Name a cell that lacks membrane. Where is it prepared?

10. What is plasmolysis? What happens to a plasmolysed cell when it is placed in water ?

11. What do you mean by nucleoid?

12. What are the factors which restrict the size of the cell?

13. Name the two nucleic acids present in the cell and their functions.

14. Give any two functions of plastids.

15. Write down the main functions of cell wall.

16. Describe in short the chief components of a nucleus.

17. What role does a nucleus play in cellular reproduction?

18. Write functions of lysosomes?

19. Define Osmosis. In what ways it is different from diffusion?

20. Write one function each of – Ribosomes, Vacuole, Plasma Membrane

6. TISSUES

1. Name the tissue which is present at the growing tips of stem and roots.

2. What do you mean by parenchyma?

3. Name the tissue which allows easy bending in various parts of a plant.

4. Which structure protects the plant body against the invasion of parasites?

5. Where is intercalary meristem found?

6. Name the enucleate thin walled plant cells with perforated end walls.

7. Based on ability to divide, how many types of plant tissues are found?

8. Name the tissue present at the growing tips of root and stem.

9. What is the function of xylem?

10. Name the tissues which make up the husk of coconut

11. What is lignin?.

12. What do you mean by differentiation?

13. Who coins term tissue? What is histology?

14. How are simple tissues different from complex tissues in plant?

15. Which type of plant tissue is an active site of cell division?

16. Meristematic tissue is responsible for the growth of the plant. Which type of meristematic

tissue is responsible for the increase in girth of the plant?

17. Which type of permanent tissue does carrot contain?

18. Which type of permanent tissue help the aquatic plants to float?

19. Which type of parenchyma contains chlorophyll?

20. Which substance is responsible for thickening of sclerenchyma walls?

21. Epidermis in desert plants has a thin waxy coating of a chemical substance.Name the chemical.

22. Which are the tubular structures present in xylem?

23. Name the part of phloem with perforated walls.

24. Name the dead part of phloem.

25. What are companion cells and what are they associated with?

15. IMPROVEMENT IN FOOD RESOURCES

A. Very short answer questions:

Q1. Define the following terms:

a) Photoperiod b) green manure c) organic farming d) concentrates e) roughage

Q2. Mention one advantage and one disadvantage of green revolution.

Q3. What nutrients do we get from: cereals and pulses?

Q4. How many nutrients are required in lesser quantities and what are they commonly called?

Q5. Why even excess application of manure does not cause pollution?

Q6. Give one disadvantage of fertilizer.

Q7. Name one crop which can tolerate water logging in field and one which cannot?

Q8. What happens when a matured wheat crop is irrigated?

Q9. A farmer grows gram crop between two cereal crops. What agricultural practice is being

followed?

Q10. Give one word:

1) A toxic substance effective against insects.

2) A fungal disease of wheat crop 3) A common weed

4) A weedicide 5) One natural insecticide

Q11. Name one HYV of cow and one of buffalo.

Q12. Name two exotic varieties of cow.

Q13. What are the indications for diseased cattle?

Q14. Why special care of broiler is taken?

Q15. During heavy rains in a village, the rain water carried excess of nitrogen into the river.

What can be the consequence of this process.?

Q16. Name two indigenous breeds of poultry.

Q17. Define inland fishery.

Q18. How is pisciculture different from apiculture?

Q19. Name two fresh water fishes.

Q20.What two products do we obtain from honey bees?

B. Short answer questions:

Q1. How are HYV of poultry advantageous over local breeds?

Q2. What is pasturage and how is it related to honey production?

Q3. How will you distinguish between capture fishery, inland fishery and aquaculture?

Q4. Name the Italian bee variety used for honey production and mention two reasons for why

it’s preferred over other varieties?

Q5. Define composite fish culture and mention its advantage.

Q6. How are broilers and layers different from each other?

Q7. Mention four main features of a good cattle shelter.

Q8. Pick the odd one out and give reason:

a) Gir ,sahiwal, red sindhi, jersey

b) Aseel, basra, chattisgarh, white leghorn.

Q9. Suppose you are in charge of a grain store. Mention two indications to find out the

presence of pests in the godown.

Q10. Give reason:

a) legumes are desirable during crop rotation

b) Excessive irrigation of crops should be avoided.

Q11. Classify the various plant nutrients according to their sources.

Q12. Crop variety improvement is a must. Justify by giving three reasons.

Q13.How is a compost different from vermicompost?

Q14. Pick the odd one out with reason:

a) mullets, pearl spots, oyster, bhetki

b) sardine, rohu, Bombay duck, tuna

Q15. Name the surface , middle zone and bottom feeders in composite fish culture.

C. Long answer questions:

Q1. Green revolution is like two faces of a coin . Explain in detail.

Q2. Write a note on prevention of animal diseases.

Q3.Mention the various preventive measures to be taken in account during grain storage.

Q4. Biological control methods should be preferred for protecting crops. Why?

Q5. Compare mixed and intercropping . also mention their advantages.oa

Social Science

Disaster management File work (Compulsory CBSE Project work)

ARABIC

How did you spend your holiday? Write a paragraph of 10 lines describing that.

CBSE ARABIC:

� ������ ��ف و��ف ا������ 1-أ��� �� ���

�� � �� ا���� ت ا����� 2 - �ّ�ن ��

���ك� م - &�% - �$��#�ـ ر� لـ ا!� ن ـ �� �ر ـ (!

3 -

ن 8ا�+ 1 ��ا��� ا�%روس �� -4,����

HINDI

1. Create 3 badges for Hindi divas.

2. Prepare articles for Hindi magazine.

3. Complete your creative writing book exercises 5, 6 and 7.

MALAYALAM

1. ��� ������ ��� � ��������.

1. ���������� ��� ���������. 2. ����� ��������� � ��� ����.

3. ����!" #�!��� �����$ �%� ���.

4. ����&������ �'��(� �(!"��) �*+ .

2. ����, ��-��. (.�#�%���� �/�)

1. 01���� 2$+ (��� 23��� � ����� .

2$�4����� ��� � ��������.

1. 0��(��� 5�1� 6&�(�)������$� �%�(� �.��73/ �('8���.

2. �.��73 .��9�%��:�� 6 ���(�) �;�������$� <$� �('=���$��� ����(�� ��� ��&!" �����.

3. �%�(� �.��73 �����( 9>� ��(?�� � @��(��� ��(�;�$ �7'&� �����.

4. �.��7� � 5����� �����A�� 0B��%��� ��:��C <$� �.��73 D ;�� � .5� � 4:������ �����A�� �E� ��� (F���.

5. �+ �G�����.

1. ��!�� : ��.����) H �*��� (��� ���I��� ��J�� �'����� � ��1��� 4:��� ($+ @�� 4;� ��+ H �*��� (��� ��(�K ������ � ���� ��'�+ 2�� �+ �G�����.

2. ��!�� : �������� � ������ �LE�:�� �G�$��� 2�� ���-� ��?����� � M��A� ��+ 2�� �+ �G�����.

�N���� '1�A� ��$ �?���:!��� N��N�������� O�C����� ($��� 4;� .����- P. #�. �+ 2�� �+ �G�����.

******************************************