Question

State any two postulates of kinetic theory of gas

Answer 1

All gases consist of some basic units called molecules. The molecules are made up of single or group of atoms depending on the chemical nature of the gas.
            

The molecules move in random direction with random speed.
            

The molecules undergo collisions among themselves and to the walls of the container. These collisions are perfectly elastic. The collision time is very small compared to the average time spent by a molecule between two collisions.