Page 1 of 12

Important Instructions for the

School Principal

(Not to be printed with the question paper)

1) This question paper is strictly meant for use in school based SA-I, September-2012 only.

This question paper is not to be used for any other purpose except mentioned above under

any circumstances.

2) The intellectual material contained in the question paper is the exclusive property of Central Board of Secondary Education and no one including the user school is allowed to

publish, print or convey (by any means) to any person not authorised by the board in this

regard.

3) The School Principal is responsible for the safe custody of the question paper or any other material sent by the Central Board of Secondary Education in connection with school

based SA-I, September-2012, in any form including the print-outs, compact-disc or any

other electronic form.

4) Any violation of the terms and conditions mentioned above may result in the action criminal or civil under the applicable laws/byelaws against the offenders/defaulters.

Note: Please ensure that these instructions are not printed with the question

paper being administered to the examinees.

Page 2 of 12

I, 2012

SUMMATIVE ASSESSMENT I, 2012

/ SCIENCE

IX / Class IX

3 90

Time allowed : 3 hours Maximum Marks : 90

(i)

(ii)

(iii)

(iv)

(v) 1 3

(vi) 4 7 30

(vii) 8 19 50

(viii) 20 24 70

(ix) 25 42

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) Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in

one word or in one sentence.

(vi) Question numbers 4 to 7 in Sections-A are two marks questions. These are to be answered

in about 30 words each.

(vii) Question numbers 8 to 19 in Section-A are three marks questions. These are to be answered

in about 50 words each.

(viii) Question numbers 20 to 24 in Section-A are five marks questions. These are to be answered

in about 70 words each.

(ix) Question numbers 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.

SC1-072

Page 3 of 12

SECTION-A

1.

Out of the three states of matter, which cannot be compressed on applying pressure ?

1

2.

Name the process through which an amoeba acquires its food from the external environment.

1

3.

When the driver of a bus applies sudden brakes, the passengers fall forward. Why ?

1

4.

(a)

(b)

Give reason for the following observations : (a) Naphthalene balls disappear with time without leaving any solid. (b) We can get the smell of perfume sitting several meters away.

2

5.

A mixture of alcohol and water is homogeneous while that of oil and water is heterogeneous. Explain.

2

6.

How does the bone matrix differ from the matrix of cartilage ?

2

7. g G

Define acceleration due to gravity. Write the relation between g and G.

2

8. (a)

(b)

(a) A farmer saw long unwanted plants in his cultivated field. What are these plants commonly known as ? Give one example for these. (b) List any four preventive methods to be followed to protect the cultivated field against it.

3

9.

Name two exotic and two local breeds of cattle that the students have observed when they visited a livestock farm. List any two desirable qualities that you would

3

Page 4 of 12

expect in the progeny when they undergo cross breeding ?

10. (a) 25C

(b)

(a) The room temperature on Celsius scale is 25C. What is the room temperature on Kelvin scale ? (b) State four characteristics of particles of matter.

3

11.

Mention three points to justify that air is a mixture and not a compound.

3

12. (a) ATP

(b)

(a) Which cell organelle would you associate with ATP production ? How is this organelle able to make its own proteins ? (b) A student performed an experiment by placing the de-shelled egg in a concentrated salt solution for five minutes. What changes did he observe in the egg ? Give reason for the same.

3

13.

As plants grow older, the outer protective tissue of stem changes into cork. How does this happen ? List two salient features of cork.

3

14.

Name the kinds of muscles found in your limbs and lungs. How do they differ from each other structurally and functionally ?

3

15. 50m 25m/s

An object starting from rest attains a speed of 25m/s after travelling a distance of 50m. Calculate the acceleration produced and the total time taken to cover that distance.

3

16. (a)

(b) m 4m P Q v 4v

(a) Which one has more inertia - a five rupee coin or a one rupee coin ? Why ? (b) Two objects P and Q of masses m and 4m move with velocities v and 4v respectively. Calculate the ratio of their linear momenta.

3

Page 5 of 12

17.

State and prove the law of conservation of linear momentum.

3

18. 10kg

g 10m/s2

Write one point of difference between mass and weight. Calculate the weight of an object of mass 10kg on the earth. What will be its mass and weight on the moon ?

Given g on earth is 10m/s2.

3

19.

State Newtons law of gravitation. What happens to the gravitational force

between two objects if the mass of one object is tripled and the distance between them is halved ?

3

20. (a)

(b)

(a) Mention the indications found in the grains that are stored in places of inappropriate moisture and temperature. State losses occurring due to there.

(b) State three preventive measures to be taken before the grains are stored for future use ?

OR

(a)

(b)

(c)

(a) Define composite fish culture. (b) State the advantages of this system by giving suitable examples. (c) What is the major problem in composite fish farming ? How is this problem overcome ?

5

21. (a)

(b)

(a) It is a hot summer day; Mohan and Sudha are wearing cotton and nylon clothes respectively. Who do you think would be more comfortable and why ?

5

Page 6 of 12

(b) You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. Suggest any three methods you would use to dry the shirt faster giving reason for each.

OR

(a)

(b)

(c)

(a) List any two properties that liquids have in common with gases. (b) Give two reasons to justify that an Iron almirah is a solid at room temperature. (c) What happens to the heat energy which is supplied to the solid once it starts melting.

22. (a)

(i)

(ii)

(b) A

(a) Differentiate between true solution, colloid and suspension on the basis of the following properties : (i) Size of particles (ii) Stability (b) When a beam of light was passed through the solution of substance A dissolved in water, the path of light could be seen. What is this phenomenon called ? What is the nature of the solution ?

OR

(a)

56C

(b)

(a) While diluting a solution of salt in water, a student accidentally added acetone (boiling point 56C) to it. What technique can be employed to get back the acetone and what is the principle involved in the technique ? (b) Write three differences between a physical and a chemical change.

5

23. (a)

(b) A B 40km/hr

A 60km/hr

5

Page 7 of 12

(a) Derive the equation for position - time relation of motion using graphical method. (b) A bus goes from town A to town B with a uniform speed of 40km/hr and returns back to A with a speed of 60km/hr. Calculate the average speed and the average velocity for the entire journey.

OR

(a)

(b)

(s) 0 10 20 30 40 50 60

(m/s) 10 20 30 40 50 60 70

(i)

(ii) 60

(a) Derive the equation for position velocity relation of motion using graphical method. (b) A car is moving on a straight road with uniform acceleration. The following table gives the speed of the car at different instants of time.

Time (in sec) 0 10 20 30 40 50 60

Speed (in m/s) 10 20 30 40 50 60 70

(i) plot the speed time graph for the above motion. (ii) Calculate the distance travelled by the car in 60 seconds.

24. (a)

(b)

(c) 4 kg 40g

200m/s 0.002s

(a) State Newtons third law of motion. (b) Explain why a cricketer moves his hands backwards while catching a ball. (c) A rifle of mass 4 kg fires a bullet of mass 40g. The bullet leaves the barrel with a speed of 200m/s. If the bullet takes 0.002s to move through its barrel, calculate the recoil force experienced by the rifle.

OR

(a)

(b) 100g 5s 30m/s

(a) State Newtons second law of motion. Use it to derive the relation between force and acceleration and hence define the S.I unit of force. (b) A ball of mass 100g acquires a speed of 30m/s in 5s. Calculate the force acting on the ball.

5

Page 8 of 12

/ SECTION - B

25.

(a) (b)

(c) (d)

Ritu wants to test the presence of starch in the bread. The reagent which she can use is : (a) Iodine solution (b) Methylene blue (c) Methyl orange (d) Safranine

1

26.

(a) (b)

(c) (d)

Hari bought Tur dal. The grains fell in water. It turned yellow. He took it to the lab and added few drops of conc-hydrochloric acid. The sample turned pink. It inferred the presence of : (a) Starch (b) Turmeric (c) Metanil yellow (d) Proteins

1

27.

(a)

(b)

(c)

(d)

To determine the melting point of ice, a student immersed the thermometer bulb in crushed ice in a beaker and heated the beaker on a low flame. He would observe: (a) An increase in temperature during melting of ice. (b) A decrease in temperature during melting of ice. (c) A decrease first and then an increase in temperature during melting of ice. (d) The temperature remains constant during melting of ice.

1

28.

(a)

(b)

(c)

(d)

When we determine the boiling point of a liquid, the thermometer should be so placed that its bulb : (a) dips in the liquid. (b) be above the liquid and vertical

1

Page 9 of 12

(c) touches the bottom of container of the liquid. (d) be placed slanting in the liquid.

29.

(a) (b)

(c) (d)

Conversion of a solid into vapour is called : (a) Vapourization (b) Fusion (c) Sublimation (d) Condensation

1

30.

(a) (b)

(c) (d)

Sanjay, a student of class ninth, was asked by his science teacher to prepare a suspension. He added the sample in water but forgot the name of substance. What may be the correct name of the sample ? (a) Barium chloride (b) Chalk powder (c) Alum (d) Egg albumin

1

31.

(a)

(b)

(c)

(d)

When we start heating a mixture of sulphur powder and iron filings, we would observe that : (a) Sulphur starts melting. (b) Mixture evaporates. (c) Mixture becomes red hot. (d) Iron filings start melting.

1

32. A B

(a) A B

(b) A - B -

(c) A - B

(d) A - B

A white precipitate is formed when two solutions A and B are mixed. The two solutions can be : (a) A Copper sulphate and B Sodium sulphate (b) A lead nitrate and B- Sodium nitrate. (c) A barium chloride and B sodium chloride. (d) A barium chloride and B Sodium sulphate.

1

33.

(a) (b)

1

Page 10 of 12

(c) (d)

Sulphur dissolves in : (a) Water (b) Alcohol (c) HCI (d) Carbon di sulphide

34.

(a)

(b)

(c)

(d)

When dilute sulphuric acid is added to zinc granules, it is observed that : (a) A precipitate is formed. (b) The reaction mixture turns yellow. (c) The container becomes cool. (d) Bubbles start coming out from the surface of zinc granules.

1

35.

(a) (b)

(c) (d)

Meena was asked to prepare a temporary mount of an onion peel. She observed the slide under microscope and found that the nucleus is : (a) in the corner of the cell (b) near the cell wall (c) in the centre of the cell (d) not present in the cell

1

36.

(i)

(ii)

(iii)

(iv)

(a) (i) (iv) (iii) (ii) (b) (ii) (iv) (iii) (i) (c) (i) (ii) (iii) (iv) (d) (iv) (ii) (iii) (i) A student was asked to prepare a temporary mount of the human cheek cells and list the steps. (i) Scrapping from inner side of the cheek (ii) Adding a drop of glycerine (iii) Adding a few drops of methylene blue (iv) Spreading it on the slide The correct sequence is : (a) (i) (iv) (iii) (ii) (b) (ii) (iv) (iii) (i) (c) (i) (ii) (iii) (iv) (d) (iv) (ii) (iii) (i)

1

Page 11 of 12

37.

(a) (b)

(c) (d)

Raju mounted an onion peel and observed with the help of the compound microscope. The components of the cell which would be seen are : (a) Plasma membrane, mitochondria, nucleus (b) Cell wall, nucleus, golgi apparatus (c) Cytoplasm, nucleus, plasma membrane (d) Cell wall, cytoplasm, nucleus

1

38.

(a) (b)

(c) (d)

Neetu observed the permanent slide of tissue and found that the tissue has long narrow cells with lignified cell wall, which can be : (a) Collenchyma (b) Sclerenchyma (c) Parenchyma (d) Chlorenchyma

1

39.

A, B, C D

(a) A B C D

(b) A B - C D -

(c) A B - C D

(d) A B C - D -

A student labelled the parts A, B, C and D in the diagram of nervous tissue after observing its permanent slide under a microscope. The Correct labelling is :

(a) A nucleus, B myelin sheath, C cytoplasm, D Dendrite (b) A nucleus, B - cytoplasm, C dendrite, D-myelin sheath (c) A cytoplasm, B - myelin sheath, C nucleus, D dendrite (d) A nucleus, B dendrite, C-myelin sheath, D- Cytoplasm

1

Page 12 of 12

40. 40mL A 40mL

B A 37 C B

90 C A B

(a) A B (b) A B

(c) B A (d) A B

Ram soaked 6 raisins in 40mL of water in a beaker labelled A and another 6 raisins in 40 mL of water in a beaker labelled B. He maintained the temperature of beaker A at 37 C and beaker B at 90 C. After an hour he calculated the water absorbed by the raisins in beaker A and B and found that the percentage of

water absorbed is : (a) More in A and less in B (b) The same in both A and B (c) More in B and less in A (d) Water is not absorbed both A and B

1

41.

300 100

90

(a) 0 - 100 1.0

(b) 0 - 200 2.0

(c) 0 250 2.0

(d) 0 - 500 2.0

Krishna performs an experiment to establish the relation between weight of a rectangular wooden block lying on a horizontal surface and minimum force required to just move it using a spring balance. If the weight of the wooden block is 300gwt and two known weights of 100gwt each are to be successively placed on the wooden block to take two more readings, then which one of the following spring balances would you select to obtain the best result. It is known that a force of 90gwt is required to just move the block on the surface. (a) range 0-100gwt ; least count 1.0 gwt (b) range 0-200gwt ; least count 2.0 gwt (c) range 0 250gwt ; least count 2.0 gwt (d) range 0-500 gwt ; least count 2.0 gwt

1

42.

(a) 40 (b) 35 (c) 45 (d) 30

A wooden box in the shape of a cuboid open from the top is placed on a wooden floor. Following weights are placed inside the box one by one. In which case the force required to move the box is minimum ? (a) 40 gwt (b) 35 gwt (c) 45 gwt (d) 30 gwt

1

- o O o -