1. Which of the following represents the total heat energy in a body?
2. When hot water is mixed with cold water, the final temperature will be
3. Which of the following is used as a heat insulator?
4. The boiling point of water decreases when
5. Which of the following is an example of conduction?
6. Why are desert days very hot and nights very cold?
7. Which of the following expands on heating and contracts on cooling?
8. Heat transfer in air mainly occurs by
9. Why are cooking vessel handles made of plastic or wood?
10. Which of the following has the highest heat energy at the same temperature?
11. When a liquid is heated, its molecules
12. Refrigerators remove heat mainly by
13. Which of the following is best for keeping liquids hot for a long time?
14. Why do we sweat more on a hot day?
15. Which of the following processes releases heat?
16. The temperature of boiling water remains constant because
17. Which of the following is a good conductor of heat?
18. Why does ice float on water?
19. Land breeze occurs due to
20. Which of the following is the best example of convection?
