1. Fish can survive in a frozen lake because

2. A needle sinks in water whereas a ship made of iron floats on it because

3. Consider the figure of a fountain with four holes, given below. Which one of the holes in the fountain will throw the water farthest?

4. An ice cube is floating in a glass of water. What happens to the water level when the ice melts? It

5. Which of the following is the byproduct derived from the refining process of petroleum?

6. Four wires of same material and dimensions as mentioned below are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?

7. Oil spreads on water surface because

8. While floating in a sea what part of an iceberg is above the surface of the sea?

9. Spherical form of raindrop is due to

10. For which one of the following capillarity is not the only reason?

11. Pressure inside a soap bubble is

12. While lifting a bucket of water from a well, we feel that the bucket

13. Static science is associated with

14. Why does an iron nail float on mercury while it sinks in water?

15. A body floats at 4ºC water. If temperature reaches 100ºC, then

16. When a ship enters a sea from a river, what happens?

17. If two bubbles of soap of different diameter come in contact with a tube, then what will happen?

18. In automobile hydraulic brakes work on

19. The clouds float in the atmosphere because of their low

20. Consider the following statements. A Simple Pendulum is set into oscillation. Then,
1. the acceleration is zero when the bob passes through the mean position.
2. in each cycle the bob attains a given velocity twice.
3. both acceleration and velocity of the bob are zero when it reaches its extreme position during the oscillation.
4. the amplitude of oscillation of the simple pendulum decreases with time. Which of these statements are correct?

21. Assertion (A): An iron ball floats on mercury but gets immersed in water. Reason (R): The specific gravity of iron is more than that of mercury. Code

22. Mobiles and Automobiles have brought about a revolution in the social life of Indians, especially in the rural, in terms of
1. Mobility of the people
2. Connectivity of the people
3. Sensitivity of the people Select the correct answer from the code given below.

23. Assertion (A): The weight of human being on the Moon is1/6 in comparison to Earth. Reason (R): The Moon does not have gravity like Earth. Select the answer from following codes.

24. The tendency of a liquid drop to contract and occupy minimum area is due to

25. 200 gm of water is filled in a weightless balloon. Its weight in water will be