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1. The phenomenon of change of liquid into vapour below boiling point is called

2. Evaporation causes

3. The process of water vapour changing into liquid is

4. Which of the following has the highest compressibility?

5. LPG and CNG are examples of

6. Kelvin is the SI unit of

7. 0°C is equal to

8. The air we breathe is

9. Solids are

10. Liquids are called

11. When a solid is heated, its particles

12. The process of melting is also known as

13. At its melting point, the temperature of ice

14. The amount of heat required to change 1 kg of solid to liquid without temperature change is

15. The temperature at which a liquid starts boiling is called

16. The change of water vapour into ice without changing into liquid is

17. Increasing pressure and reducing temperature can

18. The process of direct change from solid to gas is shown by

19. The unit of pressure is

20. The rate of evaporation increases with