1. When ice melts its
No Explanation
2. The audible frequency range of a human ear is
No Explanation
3. It is easier to swim in sea water than in ordinary water because
No Explanation
4. The intensity of earth's gravitational field is maximum at
No Explanation
5. A block of ice is floating in a glass containing water. When the ice melts completely, the level of the water in the glass will
No Explanation
6. Fat can be separated from milk in a cream separator because of
No Explanation
7. If the earth is stop rotating the value of g
No Explanation
8. A small and a large rain drops are falling through air
No Explanation
9. Which one of the following has high frequency?
No Explanation
10. The weight of the body at the centre of the earth is
No Explanation
11. The cloud float in the atmosphere because of their low
No Explanation
12. When a stone is dropped on the surface of still water the waves produced are
No Explanation
13. Which one of the following does TV remote control unit use to operate a TV set?
No Explanation
14. With the rise of tempereature the speed of sound in gas
No Explanation
15. SONAR is based on the principle of
No Explanation
16. The Celsius temperature is a/an
No Explanation
17. X-rays absorption will be maximum for the sheets of
No Explanation
18. What is the best conductor of heat?
No Explanation
19. At upper atmosphere an astronaut fells
No Explanation
20. Sound waves in air are --------waves
No Explanation
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