CBSE Class 9 Science Sample Paper Set 14

SECTION - A

1. Name the tissue present at the base of leaves of the plants. 1

2. The factor associated with the motion of an object are : Force, Velocity, Acceleration and Momentum. Out of these four factors which one remains constant for all bodies large or small, undergoing a free fall. 1

3. Why are small kids advised to play cricket with soft·tennis ball rather than leather ball? 1

4. Why is crystallisation better than evaporation? 2

5. List two differences between SER and RER. 2

6. A racing car has uniform acceleration of 4 m/s². Find the distance covered by it in after start ?

7. Tabulate three differences between boiling and evaporation. 10 seconds

8. A substance 'A' has fixed shape and volume. It is incompressible. Predict the state of the substance. Enlist four properties of this state of matter. 3 [P.T.O.]

9. (a) Name the compound formed on heating a mixture of Iron filing and sulphur. I

(b) If dilute HCI is added to above compound then name the gas evolved and write down its two properties.

10. Differentiate between xylem and phloem tissues. 3

11. (a) Why do sclerenchyma cells have a narrow lumen?

(b) Where are these tissues present and why ? 3

12. Name the two quantities, the slope of whose graphs gives

(i) speed .

(ii) acceleration.

A body starts to slide over a horizontal surface with an initial velocity of 0.5 mls. Due to friction, its acceleration decreases at the rate of 0.05 m/s2. How much time will it take for the body to stop ? 3

13. A heavy leather ball and a light tennis ball are kept on the floor of a moving train when train is suddenly stopped, they are set in motion. In which direction will they move ? Which one of them will attain higher velocity ? 3

14. Give reasons:

(i) A piece of paper takes much longer to fall than a stone through the same distance. (ii) The mass is constant everywhere whereas the weight keeps changing.

(iii) The value of 'g' keeps changing as we move away from the earth whereas value of 'G' remains constant all over the universe. 3

15. On Earth, how much force is needed to lift an object of mass I 00 g. 3

16. An object of mass 2 kg is sliding with a velocity of 4 m/s along the surface of a vertical wall.

What is the force required to keep the object moving with the same velocity ? 3

17. Shekhran was planning to transplant paddy. His son Raman told him that he can have fish along with paddy in the same field. He told him about the species of fish that are able to live in shallow water of paddy fields. His father shared the information with his friend, so that both of them can practice the same.

(i) Name this mode of obtaining fish.

(ii) Which method is used to get pure fish seed ? 3

(iii) Mention two values of Raman that prompted him to make...his father adopt this practice.

18. Write three advantages of crops growing in shorter duration of time to that growing in longer duration of time. 3

19. (a) Evaporation causes cooling. Comment upon this statement.

(b) Give two examples from daily life that illustrate evaporation causes cooling. 5

20. Identify the physical and chemical changes from the following: 5

(a) Heating the mixture of iron and sulphur. (b) Ripening of fruits

(c) Dissolution of salt in water

(d) Rusting of iron-chair. (e) Making egg omelets.

21. Write four characteristics features. of Parenchyma a tissues. How would you classify this tissue based upon its specialised functions? What are these functions? 5

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