Distinguish between solids,liquids,and gases in tabular form under the following characteristics:
$(a)$ Interparticle force of attraction
$(b)$ Diffusion
$(c)$ Fluidity.

Which of the following substances in the gaseous state should be called a vapour?
$(i)$ Helium
$(ii)$ Nitrogen
$(iii)$ Carbon dioxide
$(iv)$ Sulphur

What happens to the heat energy that is supplied to a solid once it starts melting?

Arrange the three states of matter in the increasing order of:
$(i)$ rate of diffusion
$(ii)$ particle motion

State whether the following statement is true or false:
$0^{\circ} C = -273 \ K$

Give reasons to explain why:
$(i)$ Carbon dioxide is called a gas?
$(ii)$ $A$ gas fills a vessel completely?
$(iii)$ Gases are so easily compressible,whereas it is impossible to compress a solid or a liquid.