summative assessment i (2011) lakdfyr ijh{kk&i 470015

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SUMMATIVE ASSESSMENT –I (2011)

Lakdfyr ijh{kk&I SCIENCE / foKku

Class – IX / & IX

Time allowed: 3 hours Maximum Marks: 90 fu/kkZfjr le; % 3 ?k.Vs vf/kdre vad % 90

General Instructions:

(i) The question paper comprises of two sections, A and B. You are to attempt both

the sections.

(ii) All questions are compulsory.

(iii) There is no overall choice. However, internal choice has been provided in all the

five questions of five marks category. Only one option in such questions is to be

attempted.

(iv) All questions of section A and all questions of section B are to be attempted

separately.

(v) Questions 1 to 3 in section A are one mark questions. These are to be answered in

one word or in one sentence.

(vi) Questions 4 to 7 in section A are two marks questions. These are to be answered

in about 30 words each.

(vii) Questions 8 to 19 in section A are three marks questions. These are to be

answered in about 50 words each.

(viii) Questions 20 to 24 in section A are five marks questions. These are to be

answered in about 70 words each.

(ix) Questions 25 to 42 in section B are multiple choice questions based on practical

skills. Each question is a one mark question. You are to select one most

appropriate response out of the four provided to you.

lkekU; funsZ”k %

(i) bl iz”u i= dks nks Hkkxksa, Hkkx v vkSj Hkkx c esa ckaVk x;k gSA vkidks nksuksa Hkkxksa ds iz”uksa ds mRrj

fy[kus gSaA

(ii) lHkh iz”u vfuok;Z gSaA

(iii) iwjs iz”u i= ij dksbZ p;u izkIr ugha gS ijUrq ikap&ikap vadks ds ikWap iz”uksa esa Hkhrjh p;u fn;k x;k

gSA bu iz”uksa esa vki dsoy ,d Hkhrjh p;u dks mRrj fy[kus ds fy, pqu ldrs gSaA

(iv) vkidks Hkkx v vkSj Hkkx c ds lHkh iz”uksa ds mRrj iF̀kd&i`Fkd fy[kus gksaxsA

(v) Hkkx v ds iz”u la[;k 1 ls 3 ds iz”u ,d&,d vad ds gSaaA buds mRrj ,d “kCn vFkok ,d okD; esa

nsaA

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(vi) Hkkx v ds iz”u la[;k 4 ls 7 ds iz”u nks&nks vadksa ds gSaA buds mRrj yxHkx 30&30 “kCnksa esa nsus gSaA

(vii) Hkkx v ds iz”u la[;k 8 ls 19 ds iz”u rhu&rhu vadksa ds gSaA buds mRrj yxHkx 50&50 “kCnksa esa nsus

gSaA

(viii) Hkkx v ds iz”u la[;k 20 ls 24 ds iz”u ikap&ikap vadksa ds gSaA buds mRrj yxHkx 70 “kCnksa esa nsus gSaA

(ix) Hkkx c ds iz”u la[;k 25 ls 42 ds iz”u iz;ksxkRed dkS”ky ij vk/kkfjr cgqfodYih iz”u gSaA izR;sd

iz”u ,d vad dk gSA fn, x;s pkj fodYiksa esa ls vkidks dsoy ,d lcls mi;qDr fodYi pquuk gSA

Section A

1. Why do people sprinkle water on the roof after a hot sunny day.

2.

Which would require a greater force – accelerating a 1 kg mass at 10 m/s2 or a 2 kg mass at

4 m/s2 ?

1 kg 10 m/s2

2 kg . 4 m/s2

3. Name the processes by which CO

2 and H

2O move into and out of the cell ?

CO2 H

2O

4. Give reason why naphthalene balls disappear without leaving any solid ?

5. State universal law of gravitation. How the force between the two bodies is affected 2

if the distance between them is tripled ?

6. Why is plasma membrane called semi-permeable membrane ? Write one function of it.




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7. What is the chemical substance that makes the cells of the sclerenchyma hard ? Mention

where this tissue is likely to be present ?

8. Give reasons : 3

(a) Water kept in an earthen pot becomes cool after some time.

(b) Ice at 0oC is more effective in cooling than water at 0C.

(a)

(b) 0oC 0oC

9. Using a flow chart show the process of obtaining different gases from air. 3

10. Define acceleration. State a relationship connecting u, v, a and t for an accelerated

motion. Give an example of a motion in which acceleration is uniform.

u, v, a t

11. (a) Name the property by virtue of which a body resists a change in its state of motion.

Name the physical quantity which is a measure of this property.

(b) Explain why some of the leaves may get detached from a tree if we vigorously shake its

branch.

(a)

(b)

12. An object has a mass of 30 kg. What is its weight (i) on the moon (ii) on another

planet ? The value of ‘g’ on moon is 1/6 the value of ‘g’ on the earth. The value of ‘g’ on

the planet is 3 times the value of ‘g’ on the earth. Take (ge=10 m/s2)

30 kg (i) (ii)




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‘g’ ‘g’ 1/6 ‘g’ ‘g’ 3

( ge=10 m/s2

13. A man throws a ball of mass 0.5 kg vertically upward with a velocity of 25 m/s. Find :

(a) the initial momentum of the ball

(b) momentum of the ball at the half way mark of the maximum height (given

g10 m/s2)

0.5 kg 25 m/s

(a)

(b)

g10 m/s2

14. A ball is dropped from a height of 20 m. A second ball is thrown down wards from the

same height after one second with initial velocity u. If both the balls reach the ground at

the same time, calculate the initial velocity of the second ball. (Take g=10 m/s2)

20 m 1 u

(g=10

m/s2

15. List two functions of stomata ?

16. Define the term ‘tissue’. Differentiate between simple permanent tissue and

complex permanent tissue in plants. Name the tissue which

(a) allows aquatic plants to float

(b) provides flexibility to plants

(a)

(b)

17. Write the names of two organelles that contain their own genetic material ? Draw a labelled

diagram of prokaryotic cell ?




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DNA

18. What factors may be responsible for losses of grains during storage ? Also mention

any two preventive measures to control loss of grains during storage.

19. Explain that livestock production needs to be improved. Why is there necessity of animal

husbandry ?

20.

How will you separate dyes in black ink ? Explain it with the help of a diagram.

OR

Define distillation. What type of mixture can be separated by distillation ? Draw a

labelled diagram of the apparatus used for fractional distillation.

21. What is evaporation ? List the factors which affect the rate of evaporation and explain their

effect on it.

OR What is a solution ? Give an example. Mention four properties of a solution. How will you

calculate the concentration in terms of mass by volume percentage of a solution ?

22. (a) Define S.I. unit of force.

(b) Mention any two effects of force.




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(c) A body of mass 60 kg has a momentum of 300 kg m/s. Calculate its velocity.

(d) Why does a carpet beaten with a stick release dust ?

(a) S.I.

(b)

(c) 60 kg 300 kg m/s

(d)

OR State Newton’s three laws of motion. Explain how the second law gives a measure of force.

23. The velocity-time graph of an ascending passenger lift is as in the figure shown below.

(i) Identify the kind of motion of lift represented by lines OA and BC.

(ii) Calculate the acceleration of the lift :

(a) During the first two seconds.

(b) Between the 3rd and 10th second.

(c) During the last two seconds.




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(i) OA BC

(ii)

(a)

(b)

(c)

OR (a) Draw velocity-time graph for the following cases.

(i) When the object is at rest

(ii) When the object is thrown vertically upwards

(b) A motorcyclist riding motorcycle A who is traveling at 36 km/h applies the brakes and stops the motorcycle in 10s. Another motorcyclist of motorcycle B who is traveling at 18 km/h applies the brakes and stops the motorcycle in 20s. Plot speed-time graph for thetwo motorcycles. Which of the two motorcycles traveled farther before it come to a stop ?

(a)

(i)

(ii)

(b) 36 km/h1 A

10s 18km/h1

B 20s




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24. What are the different cropping patterns? Describe any two.

OR (a) Which variety of bee is advantageous - Apis cerena indica or Apis mellifera and

Why ?

(b) What is pasturage ? How is it related to honey production ?

(a)

(b)

Section B

25. Out of the following four mixtures, the one that appears clear and transparent when stirred

well and left undisturbed for some time, is :

(a) White of an egg and water (b) Fine sand and water

(c) Starch and Water (d) Common salt and water

(a) (b)

(c) (d)

26. A student mixes white of an egg with water and stirs it well. After some time he observes that :

(a) egg white settles at the bottom

(b) egg white floats on the surface of water

(c) a clear solution is formed

(d) a cloudy solution is formed




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(a)

(b)

(c)

(d)

27. A student by mistake mixed iron filings and sulphur powder. He wanted to separate them

from each other. The method he should use is to dissolve the mixture in :

(a) boiling water (b) cold water

(c) carbon disulphide (d) kerosene

(a) (b)

(c) (d)

28. When dil. H2SO4 is added to zinc granules, it is observed that :

(a) A precipitate is formed.

(b) The reaction mixture turns yellow.

(c) The container becomes hot.

(d) The container becomes cold.

(a)

(b)

(c)

(d)

29. While determining the boiling point of water pumice stone pieces are added to :

(a) spread the heat uniformly.




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(b) prevent loss of heat energy.

(c) to stop bumping of water.

(d) to avoid cracking of the glass container.

(a)

(b)

(c)

(d)

30. What is the state of water at 100C ?

(a) Solid (b) Vapour

(c) Liquid (d) Liquid and vapour

100C

(a) (b)

(c) (d)

31. Which among the following statements is incorrect about ammonium chloride

(a) It is a solid at room temperature

(b) It directly changes into vapour on heating

(c) It is soluble in water

(d) It melts at room temperature and changes into a liquid.

(a)

(b)

(c)




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(d)

32. What is the colour of copper sulphate crystals ?

(a) Blue (b) White

(c) Yellow (d) Dark green

(a) (b)

(c) (d)

33. A mixture of iron filings and sulphur heated in a hard glass test tube . What is not observed

during reaction is :

(a) The sulphur melts and forms a pale yellow liquid

(b) The molten sulphur darkens and thickens

(c) The mixture gets red hot

(d) The substance formed at the end of reaction is of brown colour

(a)

(b)

(c)

(d)

34. The technique used to separate a mixture of ammonium chloride and sand is :

(a) filtration. (b) sublimation.

(c) crystallisation. (d) sedimentation.

(a) (b)




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(c) (d)

35. A student soaked 10 g raisins in 75 mL of distilled water in two beakers A and B. He

maintained beaker A at 20C and beaker B at 40C. After an hour, the percentage of water

absorbed will be :

(a) Same in beaker A and B

(b) more in A than in B

(c) more in B than in A

(d) twice as much in B as in A

10 g 75 mL A B A 20C

B 40C 1

(a) A B (b) A B

(c) B A (d) B A

36. A cover slip is placed over the specimen to —

(a) crush the cells in order to see the organelles clearly

(b) remove extra stain and water

(c) prevent the tissue from drying

(d) prevent glycerine from leaking out

(a)

(b)

(c)

(d)

37.

A student took 5 g of powdered Arhar dal in a test tube and added 5 mL water into it.

She shook the test tube vigorously. After adding a few drops of HCl, she observed that

the dal tested positive for adulteration with metanil yellow. The observation she noted




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was

(a) The water turned brown

(b) There was no colour change in water

(c) The water turned pink

(d) The water turned blue black.

5 g 5 mL

HCl

(a)

(b)

(c)

(d)

38. A student on adding a solution X to rice extract, observed the conversion of colour of

solution to blue black. Identify the compound X.

(a) Bromine solution (b) Iodine solution

(c) Distilled water (d) Salt solution

X

X

(a) (b)

(c) (d)

39. A student while observing a human cheek cell could not observe —

(a) Nucleus (b) Mitochondria

(c) Nucleolous (d) Chloroplast

(a) (b)




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(c) (d)

40. Plant cells with thickened at corners, non lignified cell walls are : 1

(a) parenchyma. (b) collenchyma.

(c) aclerenchyma. (d) epidermal cell

(a) (b)

(c) (d)

41.

A student was asked to identify the process which occurs when the raisins are soaked in water :

(a) Osmosis (b) Plasmolysis

(c) Endocytosis (d) Diffusion

(a) (b)

(c) (d)

42. Branched striated muscle fibres interconnected by oblique bridges are : 1

(a) unstriated muscle fibres. (b) striated muscle fibres.

(c) cardiac muscle fibres. (d) skeletal muscle fibres.

(a) (b)

(c) (d)




summative assessment i (2011) lakdfyr ijh{kk&i 470015

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