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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) Allquestions 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) Allquestions of Section-Aand allquestions of Section-Bare to be attempted separately.

(v) Question numbers 1to 3in Section-Aare one markquestions. These are to be answered in

one wordor in one sentence.(vi) Question numbers 4to 7in Sections-Aare two marksquestions. These are to be answered

in about 30 wordseach.

(vii) Question numbers 8to 19in Section-Aare three marksquestions. These are to be answered

in about 50 wordseach.

(viii) Question numbers 20to 24in Section-Aare five marksquestions. These are to be answered

in about 70 wordseach.

(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.

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SECTION-A

1.

Mention two factors that need to be varied to liquefy atmospheric gases.

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2. DNA

Name two cell organelles which have their own DNA and Ribosomes.

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3.

A forced is applied on a metal block lying on floor in one direction. Still theblock does not move. Name the force which is balancing it.

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4. (a) (i) L.P.G. (ii) C.N.G

(b)

(a) Write the full form of(i) L.P.G. (ii) C.N.G

(b) Give one use for each

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5.

When a beam of light was passed through a mixture of milk and water, the path

of light was clearly visible. Explain why this happens and name thephenomenon. The above - mentioned phenomenon is also observed in denseforests. Explain how it occurs there.

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6.

(a)

(b)

(c)

(d)

Name the following tissues.(a) The connective tissue found between the skin and muscles.(b) The tissue which connects two bones.(c) The epithelial tissue which forms the lining of the kidney tubules.(d) The tissue which is present in the veins of leaves.

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7. m1 m2 A B

A B A B

A B

There are two planets A and B masses m1 radius and m2 respectively. Theyrevolve around the Sun in circular orbit. The orbital radius of A from the Sun is

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twice that of orbital radius of B. The mass of A is twice that of mass of B.Compare the forces of gravitation between A to Sun and B to Sun.

8. (a)

(b)

(a) Give two examples of fodder crops raised as food for the livestock.

(b) State any two advantages of using manure.

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9. (a)

A - B -

(b)

(a) Using the symbols given below make a diagrammatic representation ofintercropping Crop A - Crop B -

(b) Give two examples of crops selected for intercropping. Mention twobenefits that a farmer gets by following this cropping pattern.

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10.

(i)

(ii)

(iii)

Give reasons for the following :(i) Sponge is a solid even though it is easily compressible.(ii) Temperature remains constant during change of state.(iii) Naphthalene balls disappear with time without leaving any residue.

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11.

(i) (ii)

(iii) (iv)

Distinguish between homogeneous and heterogeneous mixture. Classify thefollowing mixtures as homogeneous and heterogeneous.(i) Tincture of iodine (ii) Smoke(iii) Brass (iv) Sugar solution in water

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12. (a)(b)

(a) What is membrane biogenesis ?(b) Explain what happens when a drop of concentrated sugar solution is

placed on a rheo leaf peel mounted on a glass slide. Name thisphenomenon. Would the same happen if the rheo leaf was boiled beforemounting ? Give reason for your answer.

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13. (a)

(b)

(a) Explain the process of differenciation.(b) Identify the given tissue in the diagram given below. State any three

characteristic features of the same.

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14.

Tabulate the differences between striated muscles and smooth muscles based onshape, number of nuclei and function.

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15. 2 m/s 500 m

90 km/h 1 km

A driver of a car travelling with a uniform velocity of 2 m/s notices a railwaylevel crossing at a distance of 500 m from him. A train approaching the levelcrossing with a uniform velocity of 90 km/h is at a distance of 1 km from thelevel crossing. Calculate at what rate he has to increase the velocity of the car sothat he reaches the gates of level crossing exactly when the train enters the levelcrossing. Also find the final velocity of the car when it reaches the level crossing.

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16. (i)

(ii) SI

(i) State Newtons law of motion and explain why this law is also called aslaw of inertia.(ii) Define momentum and write its SI unit.

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17. (a)

(b)

(a) A ball is allowed to roll down from an inclined plane. It reaches the footof the plane and continues to roll on the ground. It stops after travellingsome distance. Is this the violation of law of inertia ? Give reasons for

your answer.(b) A player lowers his hand while catching a ball. Explain reason behind

his action.

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18. SI M

R

Define acceleration due to gravity. Write its SI unit. Derive an expression for it.in terms of mass M of earth and radius R

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19. (a)

G SI

(b)

(a) Why is Newtons law of Gravitation called universal law. List any twophenomenon that are explained by. Write SI unit of G.

(b) Write any one differences between mass and weight.

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20. (a)

(b)

(c)

(a) Define animal husbandry. Mention its any two aspects.(b) Specify the two advantages that a farmer is looking for when he crosses

a Jersey cow (exotic breed) with a Sahiwal (Local breed)(c) Explain how parasites attack cattle.

OR

(a)

(b)

(a) Name any one fresh water resource and one brackish water resource

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which are important fish reservoir. Write the names of two scientific methods todetect large schools of fish.(b) Explain composite fish culture system with examples.

21. (a)

(b)

(c) 273 K

(a) Write any two differences between evaporation and boiling ?(b) List down the factors affecting evaporation.(c) Why is at ice 273 K more effective in cooling than water at the same

temperature ?

OR

(a)

(i) (ii)

(b)

(i)(ii)

(c) 500 mL

(a) Define :(i) diffusion (ii) Latent heat of fusion

(b) Which state of matter is characterised by the following properties(i) A substance with a fixed arrangement of particles(ii) A substance that has large distance between the particles

(c) A spoonful of sugar is added to a beaker containing 500 mL of water andstirred for a while. State any two observations that you will make.Account for your observations.

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22. (a)

(b)

(a) Define a saturated solution. Suggest two methods to make a saturatedsolution unsaturated.

(b) Draw a flow chart to explain water purification system in water works.

OR(a)

(b)

(a) Describe an activity to obtain pure copper sulphate from its impuresample.

(b) Mention any two reasons to justify that crystallization technique betterthan simple evaporation technique. Write its two applications.

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23. (a) u a t

s

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(b) 0.7 m

(a) A car moving with uniform velocity u and uniform acceleration a

covers a distance s in time t. Draw its velocity time graph and derivean expression relating all the given physical quantities.

(b) A boy revolves a stone tied to string 0.7 m long. Find the distance anddisplacement covered by the stone in completing two revolutions fromstarting point.

OR

(a) u a t v

s

(b) 3.0 ms2 8.0s

(a) A bus travelling with a uniform velocity u and uniform acceleration acovers a distance s and gains a new velocity v. Draw a graphdescribing the motion of the bus and derive an expression relating allthe above mentioned physical quantities.

(b) A motor boat starting from rest on a lake accelerates in a straight line at a

constant rate of 3.0 ms2 for8.0s. How far does the boat travel in thistime ?

24. (a)

SI

(b)

(a) State Newtons second law of motion. Derive an expression for forcefrom this law motion. Write S.I. unit of force and define it.

(b) Why falling on a cemented floor causes more injury than falling onsand ?

OR

(a)

(b) 50 kg 4 ms1

5 kg

(a) State Newtons third law of motion. Illustrate how it explains ourwalking on a road.

(b) A boy of mass 50kg jumps with a horizontal velocity of 4 ms1onto astationary cart with frictionless wheels. The mass of the cart is 5kg. Findhis velocity when the cart starts moving. Assume that there is no

external unbalanced force acting on it.

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/ SECTION - B

25.

(a)

(b)

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

Metanil yellow is added to dal so as to :(a) improve the taste(b) increase its weight(c) improve the colour and appearance(d) all of these

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26.

(A)

(B)

(C)

(D)

(a) (A) (C) (b) (A) (B)

(c) (C) (D) (d) (B) (D)

Students were instructed to add a drop of iodine to each of the followingsample.(A) Cooked rice

(B) Boiled potato(C) Sugar(D) SaltThe blue black colour was observed in(a) (A) and (C) (b) (A) and (B)(c) (C) and (D) (d) (B) and (D)

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27. 30C

(a) 1C

(b) 0C

(c)

(d) 0C

At room temperature (30C) a student sets up an apparatus to determine themelting point of ice. He takes a beaker half filled with ice and dips athermometer in it. The correct observation is

(a) Mercury in the thermometer keeps on falling till it reaches 1C, itremains constant thereafter.

(b) The temperature falls, reaches 0C, then it remains constant even after

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33.

(a) (b)

(c) (d)

Students were asked to study the reaction between barium chloride and sodium

sulphate. On mixing the solutions of the two they would observe that :(a) the colour of mixture changes to yellow(b) thick white precipitate is formed(c) mixture becomes turbid(d) no change is observed

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34.

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

The colour of copper sulphate crystals is :(a) black (b) white (c) yellow (d) blue

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35.

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

A student was observing a temporary mount of onion peel stained with safraninunder a microscope. The colour of the cell wall appeared to be(a) black (b) pink (c) blue (d) yellow

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36.

(a)

(b)

(c)(d)

Which of the following features would help a student to identify the humancheek cells ?(a) The large vacuole in the centre of the cell(b) The irregular shaped cells with cytoplasm(c) The irregular shaped cells with cytoplasm and bounded by a cell wall(d) The irregular shaped cells cytoplasm and central nucleus.

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37.

(a)

(b)

(c)

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

A student prepared a temporary mount of onion peel but he could not observethe cells because(a) he had used excess stain(b) he had used a folded peel(c) there were a lot air bubbles

(d) all of the above.

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38.

(i)

(ii)

(iii)

(iv)

(a) (i) (b) (ii) (c) (iii) (d) (iv)After observing slide of a neuron, a student noted the parts as (i) Cell body (ii) Axon(iii) Light and dark band (iv) DendritesThe part noted wrongly is (a) (i) (b) (ii) (c) (iii) (d) (iv)

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39.

(a) (b)

(c) (d)

A student is given two slides of plant tissues parenchyma and selerenchyma.He is able to identify selerenchyma by the(a) location of nucleus(b) thickness of cell wall(c) size of cells(d) position of vacuoles

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40. 5 g 7g

(a) 50% (b) 70% (c) 20% (d) 40%A student soaked 5 grams of raisins in water. Weight of soaked raisins wasfound to be 7g. The percentage of water absorbed by raisins is (a) 50% (b) 70% (c) 20% (d) 40%

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41. 5 gwt

32

(a) 160 gwt (b) 32 gwt (c) 64 gwt (d) 6.4 gwtThe least count of the spring balance used for pulling a block is 5 gwt. Whilemeasuring minimum force required to just slide a block, its pointer is at 32nddivision the measured force will be (a) 160 gwt (b) 32 gwt (c) 64 gwt (d) 6.4 gwt

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42. A1, A2 A3

A1> A2> A3

F1, F2, F3

(a) F1> F2>F3 (b) F2> F3> F1(c) F3> F2> F1 (d) F1F2F3

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Area of three different faces of a rectangular block is A1, A2, A3 such that

A1> A2> A3Minimum force required to just slide it was done by keeping it

successively on three faces and the forces measured were F1, F2, F3respectively.

The relation between the three forces would be (a) F1> F2>F3 (b) F2> F3 > F1

(c) F3> F2> F1 (d) F1F2F3

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