Question

what are the postulates of kinetic molecular theory of gases?

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. 
                

The size of the molecule is very small compared to the average intermolecular distance. Molecules do not exert any force among themselves or to the walls except during collision.
                 

The molecules obey Newton's Law of Motion.
                       

The number of gas molecules is so large that at every position of infinitesimal volume of the container, the density and distribution of different physical parameters are same. The above parameters are also independent of direction and time at a steady state.

Answer 2

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1)Gases contain large number of tiny and discrete particles called molecules

2)Gas molecules are very much apart from each other

3)The molecules move randomly in all directions with high velocities

4)The collisions between gas molecules of perfectly elastic

5)pressure exerted by a gas is due to collisions of molecules made on the walls of the vessel

6)KE is directly proportional to the temperature

7)Molecules are electrically Netural and do not have attractions or repulsions between them

8)Molecular motions are unaffected by gravity.

#Fuhrer