KENDRIYA VIDYALAYA SANGATHAN CHANDIGARH REGION SESSION- 2016-17 SUBJECT-SCIENCE CLASS- IX TIME ALLOWED: 3 HOURS M.M: 90 GENERAL INSTRUCTIONS i) The question paper comprises of two sections, A and B. You are to attempt both sections. ii) All questions are compulsory. iii) There is no choice in Questions. All questions of section A and all questions of section B are to be attempted separately. iv) Question numbers 1 to 3 in section A are one mark questions. These are to be answered in one word or one sentence. v) Question number 4 to 6 are two mark questions and are to be answered in about 30 words each. vi) Question numbers 7 to 18 are three mark questions and are to be answered in 50 words each. vii) Question number 19 to 22 are five mark questions and are to be answered in about 70 words each. viii) Question number 23 and 24 are based on OTBA and are five mark questions. ix) Question number 25 to 33 in section B are multiple choice questions based on practical skills and carry one mark each. You are to choose one most appropriate response out of the four provided to you. Question no. 34 to 36 carry two marks each. SECTION A 1. What is the audible range of human ear? 2. Write chemical formulas of water and ammonia. 3. Why fungi are called heterotrophic? 4. a)What is the another name given to the buoyancy? b) Name the factor which affects buoyancy? 5. Define potential energy and draw an expression for it. 6. Write electronic configuration of elements Potassium(Z=19) and Nitrogen(Z=7) and also write their number of valence electrons . 7. The description of atomic particles of two elements X and Y is given below
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KENDRIYA VIDYALAYA SANGATHAN CHANDIGARH REGION
SESSION- 2016-17
SUBJECT-SCIENCE
CLASS- IX TIME ALLOWED: 3 HOURS M.M: 90 GENERAL INSTRUCTIONS
i) The question paper comprises of two sections, A and B. You are to attempt both sections.
ii) All questions are compulsory.
iii) There is no choice in Questions. All questions of section A and all questions of section B are to be attempted separately.
iv) Question numbers 1 to 3 in section A are one mark questions. These are to be
answered in one word or one sentence.
v) Question number 4 to 6 are two mark questions and are to be answered in about 30 words each.
vi) Question numbers 7 to 18 are three mark questions and are to be answered in 50
words each.
vii) Question number 19 to 22 are five mark questions and are to be answered in about 70 words each.
viii) Question number 23 and 24 are based on OTBA and are five mark questions.
ix) Question number 25 to 33 in section B are multiple choice questions based on
practical skills and carry one mark each. You are to choose one most appropriate
response out of the four provided to you. Question no. 34 to 36 carry two marks each.
SECTION A
1. What is the audible range of human ear? 2. Write chemical formulas of water and ammonia.
3. Why fungi are called heterotrophic?
4. a)What is the another name given to the buoyancy?
b) Name the factor which affects buoyancy?
5. Define potential energy and draw an expression for it.
6. Write electronic configuration of elements Potassium(Z=19) and Nitrogen(Z=7) and
also write their number of valence electrons .
7. The description of atomic particles of two elements X and Y is given below
Protons neutrons electrons
X 8 8 8
Y 8 9 8
(i) What is the atomic number of Y?
(ii) What is the mass number of X?
(iii) What is the relation between X and Y?
(iv) Which element/elements do they represent?
(v) Write the electronic configuration of X?
(vi) Write the cation/anion formed by the element 8. State in tabular form the causal organism and mode of transmission of following
diseases:
a)Cholera b)Malaria c)Rabies
9. (a) Which phylum is called as amphibian of plant kingdom?
(b) Write two specific characteristics of this phylum.
(c) Name two organisms belonging to this phylum.
10. The volume of a 500 g sealed packet is 350 cm3. Will the packet float or sink in water
if the density of water is 1 g cm−3
? What will be the mass of the water displaced by
this packet? 11. (a) Draw a diagram depicting low pitched sound and high pitched sound.
(b) Explain any two applications of a SONAR.
12. Number of protons, neutrons and electrons in the four specimens A, B, C and D
are :
Specimens No of protons No of neutrons No of electrons
A 6 6 6
B 7 7 7
C 6 8 6
D 9 10 10
Tell which of them are:
(a) Isotopes
(b) Isobars .Why? 13. Write two points of difference between amphibians and reptiles. Give one example of
each. 14. Give reasons for the following:
a) School bags have broad straps.
b) It is easier to cut an apple with sharp edge of knife.
c) A mug appears lighter inside water.
15. Narender was suffering with cold and cough and was running high temperature. His
mother took him to a doctor. The doctor examined the chest and back of Narender
with the help of a device ‘stethoscope’. While examining with stethoscope doctor
asked Narender to take longer breathings. After examining Narender the doctor
prescribed some drugs. By regular use of these drugs Narender was normal within
four days. But he could not understand the purpose of being examined by the use of
stethoscope. His cousin Mukesh, explained to him the exact purpose of stethoscope
and its action.
Now answer the following questions:
(i) What is stethoscope? What is its use?
(ii) How does a stethoscope work?
(iii) What quality was shown by Narender and what by Mukesh?
16. a) What is energy?
b) Explain kinds of mechanical energy with suitable example. 17. State any three postulates of Dalton’s atomic theory. 18. (a) State the law of conservation of energy.
(b) Name the type of energy possessed by stretched slinky, flowing water,
stretched rubber band and a speeding car.
19. i) Explain, how HIV-AIDS virus affects and damages our body?
ii) Write any three ways by which this microbe spreads.
20.
i) What is molecular formula ? State with example what information can be
derived from a molecular formula .
ii) Write the names of the compounds represented by the following formulas:
a) Mg(NO3)2
b) K2SO4
c )Ca3N2
21. A man whose mass is 50 kg climbs up 30 steps of a stair in 30 s. If each step is 20 cm
high, calculate the power used in climbing stairs
22. i)List any two benefits of classification.
ii) What is Binomial nomenclature? Who has given Binomial nomenclature?
iii) Write scientific names of Man and Mango.
OPEN TEXT BASED ASSESSMENT
23. Suggest the innovative solutions to control the effect of solid waste on soil, water and air.
(5)
24. i) Explain strategies for effective waste management. (3)
ii)What is the role of rag pickers in solid waste management? (2)
SECTION B
Multiple Choice Questions (MCQs)
25. A spring balance
(a) Can measure weight.
(b) Is used to determine density.
(c) May not be used to determine mass as well as weight.
(d) Is used to measure mass only.
26. During the experiment on measurement of loss in weight of solid in tap water and salty
solution, the maximum loss in weight of the body is observed when –
a) it just touches the surface of the liquid
b) it is completely immersed in the liquid
c) it is partially immersed in the liquid
d) no difference in loss in weight in above three case
27. The exoskeleton of cockroach is made up of:
(a) Cartilage
(b) Calcium and phosphorous
(c) Chitin
(d) Cellulose
28. A boy brought a free floating, bright green, silky mass from the surface of a fresh water
pond. He observed it under a microscope. Identify the specimen
a) Nostoc
b) Spirogyra
c) Sargarsum
d) Sphagnum
29. If we want to determine the volume of a solid by immersing it in water, the solid should
be
(a) Any solid
(b) Heavier than water
(c) Insoluble in water
(d) Heavier than water and insoluble in it 30. Which part is wrongly labeled in the sketch of agaricus?
a) Mycelium b) Stipe c) Gill d) annulus
30. Cockroaches are able to detect odour with the help of :
(a) Eyes (b) nostrils
(c)spiracles (d) antennae
31. The number value 6.022 × 1023
is also called
(a) Dalton Number
(b) Avogadro’s number
(c) Atomic Number
(d) Mass Number 32. In order to make an object float, its weight should be equal to
(a) Atmospheric pressure
(b) up thrust acting on it
( c) density
(d) Weight of liquid 33. (i) Expand ORS.
(ii) it is given in:
a) diarrhoea
b) measles
c) typhoid
d) tetanus 34. Three students performed the experiment on verifying the laws of reflection of sound
using a tuning fork as a source of sound. Their experimental set up is shown in figures P,
Q, and R. In which of the following set ups, will the sound of the vibrating tuning fork be
heard the most and why?
a) fig. P b) fig. Q c) both P and Q d) fig. R
35. (i)What is Reverberation?
36. (ii)Reverberation produced in large auditoriums is due to :
