The temperature of a body depends on the average …………… of the molecules.

1. potential energy
2. kinetic energy
3. elastic energy
4. atomic energy

The temperature at which pressure and volume of a gas becomes zero is :

1. 0° C
2. 0 K
3. 0° F
4. 273 K

The increase in the length of a solid on heating is called :

1. contraction
2. linear expansion
3. cubical expansion
4. superficial expansion