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Maximum Marks : 90 Maximum Time : 3 hours

General Instructions : Same as in CBSE Sample Question Paper

SECTION-A

1. Is it possible that the train in which you are sitting appears to move while it is at rest?

1

2. At what temperature does solid ice and liquid water co-exist together? 1

3. Which cell organelle controls most of the activities of the cell? 1

4. A naughty boy standing at the top of a steep hillock drops a stone. The stone reaches the

ground after 5 s. What is the height of the hill? With what velocity will it strike the

ground? (Take g = 9.8 ms–2) 2

5. A sample of water boils at 101°C at normal temperature and pressure. Is the given sample

of water pure? Will this water freeze at 0°C? 2

6. Why do plant cells possess large sized vacuole? 2

7. Write one function each of the following :

(a) Tendon

(b) Ligament 2

8. (i) How does the rate of diffusion of the following change?

(a) Diffusion of a solid in a liquid on heating.

(b) Diffusion of a gas in a liquid on heating.

(ii) Gases diffuse faster than liquids and solids. Explain.

(iii) Name the process due to which water kept in an earthen pot oozes out of its pores. 3

9. How is meristematic tissue classified on the basis of its location? Draw a well labelled

diagram to show the location of meristematic tissue in a plant body. 3

10. What are the advantages of inter-cropping and crop rotation? 3

11. Name the type of colloids in each in which dispersed phase and the dispersing

medium are respectively : 3

(a) liquid and gas.

(b) liquid and liquid.

(c) liquid and solid.

Give one example of each.

12. The velocity-time graph shows the motion of a cyclist. Find (i) its acceleration (ii) its

velocity and (iii) the distance covered by the cyclist in 15 seconds. 3

MODEL TEST PAPER – 5 (UNSOLVED)

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13. Draw diagrams to show the difference between the structures of the three types of

muscles fibres. 3

14. What is plant breeding? Write about one technique of plant breeding. 3

15. A bullet of mass 20 g is horizontally fired from a pistol of mass 2 kg with a horizontal

velocity of 150 m/s. Calculate the recoil velocity of the pistol. 3

16. A motor-car of mass 1200 kg is moving along a straight line with uniform velocity of

90 kmh–1. Its velocity is slowed down to 18 kmh–1 in 4 s, by an unbalanced external

force. Calculate the acceleration and change in momentum. Also calculate the

magnitude of force required. 3

17. Why is the cell called the structural and functional unit of life? 3

18. A stone is allowed to fall from the top of a tower 100 m high and at the same time

another stone is projected vertically upward from the ground with a velocity of

25 ms–1. Calculate, when and where the two stones will meet. [Take g = 10 ms–2].

3

19. Why is the weight of an object on the moon 1

6th the weight on the earth? 3

20. (a) Distinguish between a mixture and a compound.

(b) 4 g of solute dissolved in 36 g of water. What is the mass percentage of the solution?

(c) How can we make a saturated solution, unsaturated? 5

OR

Explain the following given examples :

(a) saturated solution (b) pure substance (c) colloid

(d) suspension (e) alloy

21. (i) Derive the equation v2 – u2 = 2as graphically.

(ii) A bus travels a distance of 120 km with a speed of 40 km/h and returns with a

speed of 30 km/h. Calculate the average speed for the entire journey. 5

OR

(i) What can you conclude about the motion of a body depicted by the velocity-time

graphs (i), (ii) and (iii) given below :

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(ii) A bus accelerates uniformly from 54 km/h to 72 km/h in 10 s. Calculate :

(a) the acceleration

(b) the distance covered by the bus in that time.

22. (i) A gas jar containing air is placed upside down on a gas jar of bromine vapour. It

is observed that after some time, the gas jar containing air also becomes

completely reddish brown.

(a) Explain why this happens.

(b) Name the process involved.

(ii) “We can easily move our hand in air but not through any solid material.” Justify

the statement giving any three possible reasons. 5

OR

(i) (a) What is meant by evaporation?

(b) Define latent heat of fusion.

(c) Why should the wet clothes be spread out while drying?

(ii) With the help of a diagram explain in brief an activity to show that particles of

matter are very small.

23. (i) State three management practices that are common in dairy and poultry farming.

(ii) List any three desirable characters of bee varieties suitable for honey production?

5

OR

(i) Distinguish between intercropping and mixed cropping. List any two advantages

of intercropping over mixed cropping.

(ii) List any three ways by which the insect pests attack the plants.

24. From a rifle of mass 4 kg, a bullet of mass 50 g is fired with an initial velocity of

35 ms–1. Calculate the initial velocity of the recoil of rifle. 5

OR

Two objects of masses 100 g and 200 g are moving along the same line and direction

with velocities of 2 ms–1 and 1 ms–1 respectively. They collide and after the collision,

the first object moves with a velocity of 1.67 ms–1. Determine the velocity of second

object.

SECTION-B

25. The combined effect of mass and velocity of a body is called : 1

(a) force (b) acceleration (c) impulse (d) momentum

26. The colour of metanil which is a common adulterant to dal is : 1

(a) chrome yellow (b) sunshine yellow (c) brilliant yellow (d) plain yellow

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27. The process used to separate a mixture of iron filings, iodine and common salt is : 1

(a) sublimation followed by magnetic separation

(b) dissolution in water followed by sublimation and magnetic separation

(c) magnetic separation followed by sublimation

(d) any order can be followed

28. A student mixed the white of an egg with water and stirred it well. After some time he

observed that : 1

(a) a transparent solution is formed

(b) a translucent mixture is formed

(c) egg white settles down at the bottom

(d) egg white floats on the surface of water

29. A 10 cm long ribbon of magnesium is held from one end in fire tongs. The other end of

the ribbon is heated in a Bunsen flame, till it catches fire. 1

The magnesium ribbon is held with fire tongs and not with bare fingers because :

(a) magnesium reacts chemically with bare fingers

(b) magnesium ribbon can cut the bare finger

(c) magnesium ribbon is good conductor of heat and hence it is difficult to hold with

bare fingers

(d) none of the above

30. For determining the percentage of water absorbed by raisins in a given time, apart

from water, raisin and a watch glass, we shall also require 1

(a) a beaker, a graduated cylinder, a thermometer, a filter paper

(b) a watch glass, a graduated cylinder, a thermometer, a weighing balance

(c) a beaker, a thermometer, a filter paper, a weighing balance

(d) a graduated cylinder, a thermometer, a weighing balance.

31. Which of the following is a true solution in water? 1

(a) Sand (b) Soap (c) Milk (d) Alcohol

32. Renu starts heating pure water in a tube, it will start boiling at : 1

(a) 173 K (b) 100 K (c) 373 K (d) 273 K

33. Cells with evenly thickened, hard, lignified walls are : 1

(a) parenchyma (b) collenchyma

(c) striated muscles cells (d) none of these

34. A blue-black precipitate with iodine solution indicates the presence of : 1

(a) starch (b) glucose (c) protein (d) fat

35. Which of the following set of apparatus is required to determine the boiling point of

water. 1

(a) Funnel, burner, clamp and stand, test tube, thermometer, wire gauze.

(b) Tripod stand, conical flask, thermometer, wire gauze, stand with clamp, pair of

tongs.

(c) Boiling tube, beaker, thermometer, burner, cork with one hole, stand with clamp,

wire gauze.

(d) Round bottom flask, burner, thermometer, wire gauze, stand with clamp, cork with

two holes, glass tube.

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36. Onion peel is obtained from : 1

(a) dry outer cover of onion (b) fleshy and succulent onion leaf

(c) roots of onion plant (d) all of these

37. A small amount of a mixture of iron and sulphur powder is taken in a test tube and

to it is added dilute sulphuric acid. It is observed that : 1

(a) a brisk reaction takes place, but no gas is evolved

(b) a brisk reaction takes place, with the evolution of a colourless gas

(c) the yellow colour of sulphur disappears

(d) a foul smelling gas is evolved.

38. A permanent slide shows thin walled isodiametric cells with a large vacuole. The slide

contains : 1

(a) collenchyma cells (b) sclerenchyma cells

(c) parenchyma cells (d) nerve cells.

39. What is not observed when a magnet is moved repeatedly through a mixture of iron

filings and sulphur placed on a paper? 1

(a) Iron filings stick to the magnet.

(b) A black mass of iron sulphide is formed

(c) Sulphur powder is left on the paper

(d) Each of the above

40. A mixture containing iodine and sand is heated in a china dish so as to recover iodine

from it. An inverted funnel is placed over the china dish : 1

(a) before heating it (b) after heating it

(c) when fumes of iodine start coming from the mixture.

(d) when fumes of iodine stop coming from the mixture.

41. A small piece of zinc is placed in a test tube and then 5 cc of dilute sulphuric acid is

poured in it. The mouth of the test tube is closed with the thumb, till the gas evolved

starts exerting pressure on it. The thumb is removed and a burning splinter is brought

near the mouth of the test tube. It is observed that : 1

(a) the splinter goes off and no sound is produced

(b) the splinter continues burning and the gas burns with a pop sound

(c) the splinter goes off and the gas burns with a pop sound

(d) none of the above

42. Momentum of a body depends upon : 1

(a) length of the body (b) mass of the body

(c) velocity of the body (d) both (b) and (c)