What is the order of intermolecular forces in solids,liquids,and gases?

What is the ratio of the rates of diffusion of gases $A$ and $B$ having molecular weights $36$ and $64$ respectively?

The ratio of the rate of diffusion of helium and methane under identical conditions of pressure and temperature will be

Normal boiling point of water is $373 \ K$ (at $760 \ mm$). Vapour pressure of water at $298 \ K$ is $23 \ mm$. If the enthalpy of evaporation is $40.656 \ kJ/mole$,the boiling point of water at $23 \ mm$ pressure will be ............. $K$.

Explain the absolute temperature scale.

State Dalton$'$s law of partial pressures.