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JNKQWDT I, 2016-17

SUMMATIVE ASSESSMENT – I, 2016-17

/ SCIENCE

IX / Class – IX

3 90

Time Allowed : 3 hours Maximum Marks : 90

1.

2.

3.

4. 1 3

5. 4 6 30-30

6. 7 18 50-50

7. 19 24 70-70

8. 25 33

9. 34 36

General Instructions : 1. The question paper comprises of two Sections, A and B. You are to attempt both the

sections. 2. All questions are compulsory 3. All questions of Section-A and all questions of Section-B are to be attempted separately. 4. Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in

one word or in one sentence 5. Question numbers 4 to 6 in Sections-A are two marks questions. These are to be answered

in about 30 words each. 6. Question numbers 7 to 18 in Section-A are three marks questions. These are to be

answered in about 50 words each7. Question numbers 19 to 24 in Section-A are five marks questions. These are to be

answered in about 70 words each. 8. Question numbers 25 to 33 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.

9. Question numbers 34 to 36 in Section-B are questions based on practical skills. Each question is of two marks.

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SECTION-A

1

Name the structure which Robert Hooke found to resemble with thin slice of cork.

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2

(i) m/s (ii) m/s2 Name the physical quantities whose Sl units are as given below :

(i) m/s (ii) m/s2

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3 0.20 m/s 5 kg

What is the momentum of a body of mass 5 kg moving with a velocity of 0.20 m/s.

1

4

Gases have more compressibility as compared to a solid or a liquid. Explain why ?

2

5

How does endocytosis process help an organism like amoeba ?

2

6

It is said that the mass of an object remains constant at all places while weight may change. Why ?

2

7

(i)

(ii)

(iii)

(iv)

(v)

(vi)

Name the technique to separate the following : (i) Various constituents of petroleum (ii) Crystals of alum from impure samples. (iii) Colours in a dye (iv) Drugs from blood (v) Cream from milk (vi) Sodium chloride from its solution in water

3

8

Define latent heat of vaporization. Give reason why steam causes more severe burns than boiling water.

3

9 (a)

(i)

(ii) 60 C

3

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(b)

(a) What would you observe when : (i) a mixture of iron filings and sulphur powder is heated strongly. (ii) a saturated solution of sodium chloride prepared at 60 C is allowed to cool at room temperature. (b) You are provided with a fine white coloured powder which is either sugar or salt. How will you identify it without tasting it ?

10

What is the structural organisation of a cell? Which three features are common in almost every cell? Which is the site of aerobic respiration in a cell? In which form energy is released in a cell?

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11 (a)

(b)

(a) Mention different types of blood cells. (b) Which substances are transported by blood ?

3

12 (a)

(b) 60 kg 3 m/s 1.5 m/s

140 kg

(a) State the law of conservation of momentum. (b) A boy of mass 60 kg running at 3m/s jumps on to a trolly of mass 140 kg moving with a velocity of 1.5m/s in the same direction. Find their common velocity.

3

13 ‘g’ 9.8 ms2

g

The value of ‘g’ on earth’s surface is 9.8 ms2. Suppose the earth suddenly shrinks to one - third of its

present size without losing any mass. What is the value of g on the surface of shrinked earth ?

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14 1.5 m 2.0 m

4.5 m

(i)

(ii)

A man travels a distance of 1.5 m towards East, then 2.0 m towards South and finally 4.5 m towards east. (i) Calculate the total distance travelled. (ii) Calculate the resultant displacement.

3

15

Suppose we want to push a heavy box. If you're applying force and still the box is not moving, what does this imply? What are the conditions required to move the box?

3

16 (a) h 3

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(b)

200 m

(i)

(ii)

(iii)

(a) A body thrown vertically upwards reaches a maximum height h. It then returns to ground. Calculate the distance travelled and its displacement. (b) In a long distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the line of start. Suppose the length of the track was 200 m. (i) What is the total distance to be covered by the athletes ? (ii) What is the displacement of the athletes when they touch the finish line ? (iii) Is the motion of the athletes uniform or non uniform ?

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IX

(i)

(ii)

(iii)

Balwinder was a small farmer. As his field was rainfed, he could not take the risk of growing specialized crops. He used to mix the seeds of two crops and sow in the field. Kaku, his son, who had passed class IX suggested to grow two or more crops simultaneously in a definite pattern to improve production. Balwinder followed and the productivity per unit area increased. (i) Name the cropping pattern which Balwinder used earlier and the one suggested by

Kaku. (ii) Write two advantages of practising the pattern suggested by Kaku. (iii) Why did Balwinder accept his son's suggestions ?

3

18 ?

Name the common diseases of cattle. How can these diseases be cured ?

3

19

Explain what is a colloidal solution? List its any four properties. Give two situations where Tyndall effect can be observed in nature.

5

20 (a)

(b)

(a) Comment on the following statement : ‘Evaporation causes cooling’.

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(b) Why do we observe water droplets outside the tumbler containing ice cold water ? Explain reason.

21

List three functions of epidermis. What changes take place in epidermis tissues as the plant grows older ?

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22 (a) 2 kg

( Me61024 kg, 6.4106m)

(b)

(i)

(ii)

(a) Calculate the magnitude of gravitational force between the earth and 2 kg object on its

surface. (Given Me61024 kg, Radius of earth6.4106m) (b) How does the gravitational force change if : (i) the distance between the two bodies is halved (ii) Mass of one object is halved

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23 (a) s = ut +

1

2 at2

(b) A B

(a) Derive the equation of motion, s = ut +1

2 at2 by graphical method.

(b) Which of the two bodies A and B in the following graph is moving with higher speed and why ?

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24 (a) 5

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(b)

(i) (ii)

(iii) (iv)

(c)

(a) Distinguish between macronutrient and micronutrients on the basis of (i) their functions (ii) amount required by plants. (b) Classify the following elements as macro or micronutrients in plants. (i) Nitrogen (ii) Zinc (iii) Copper (iv) Potassium (c) In what way, deficiency of these nutrients harmful to crops ?

/ SECTION - B

25 A B A

B

(a) A B

(b) A B

(c) A B

(d) A B

Nidhi took adulterated arhar dal in two test tubes A and B and added water to them. In test tube A she added a few drops of conc. hydrochloric acid and in test tube B added few drops of iodine solution. She observed that : (a) Solution of A turned pink, B no change. (b) Solution of A turned blue black, B turned pink. (c) Solution of A turned pink, B turned blue black. (d) Solution of A no change, B turned blue black.

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(a) (b)

(c) (d)

The food groups whose food stuffs will turn blue black when treated with iodine solution is : (a) bread, wheat, corn flour (b) dal, fish, meat (c) salt, sugar, baking soda (d) orange, lemon, apple

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27

(a)

(b)

(c)

(d)

When iron filings and sulphur powder are mixed in a beaker, the constituent particles retain

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their properties. What does this observation show ? (a) Physical change takes place. (b) Chemical change takes place. (c) Iron will not be attracted by magnet. (d) No change takes place.

28

(a) /

(b)

(c)

(d)

While using carbon disulphide in laboratory, the main precaution is : (a) there should be no naked flame near your table. (b) use protective glasses. (c) do not let it touch your skin clothes. (d) use it in a well ventilated place.

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(a) (b)

(c) (d)

Chemical Reaction between sodium sulphate solution and barium chloride solution is a : (a) Combination reaction (b) Decomposition reaction (c) Displacement reaction (d) Precipitation reaction

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30

(a) (b) (c) (d)

Tina was observing a human cheek cell slide stained with methylene blue under a microscope. The colour of the cell appears to be : (a) red (b) blue (c) black (d) yellow

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31

(a) (b)

(c) (d)

A student observed a permanent slide under a microscope and reported that the cell are long, narrow and thick walled. It is a slide of : (a) Parenchyma (b) Sclerenchyma (c) Striped muscle (d) Nerve cell.

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(a) (b)

(c) (d)

Ravi’s mother had put some chemical in woollen clothes to protect them from insects. After some time this chemical disappears. This substance can undergo :

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(a) distillation (b) sublimation (c) filtration (d) centrifugation

33

(a)

(b)

(c)

(d)

The work done by the frictional force is always : (a) positive (b) negative (c) neither positive nor negative (d) either positive or negative

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34

A -

B -

C -

(I)

(II)

Three aqueous solutions are given to you with different solutes. A - sugar B - starch C - fine sand In which of these solutions will you get : (I) a translucent filtrate (II) a residue on filter paper on filtration ?

2

35

s

In an experiment to determine the boiling point of water, the stop watch used, to note down the temperature of water at different intervals of time, has 20 divisions between 0 to 10s marks. Find the least count of the stop watch. How does noting down temperature of water at different time- intervals help in confirming that temperature has reached boiling point ?

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36

(I) 1 2

1

w w 100

w (II) 2 1

1

w w 100

w

(i)

2

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(ii) w1 w2

In the experiment of determining the percentage of water absorbed by raisins, two students Somya and Zahira used the following formula respectively :

(I) 1 2

1

w w 100

w (II) 2 1

1

w w 100

w

(i) Which student used wrong formula?

(ii) What are w1 and w2 in the correct formula?

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