Question

According to kinetic theory of gases :

• A. There are intermolecular attractions
• B. Molecules have considerable volume
• C. No intermolecular attractions
• D. The velocity of molecules decrease after each collision

Answer 1

The correct option is A There are intermolecular attractions

The theory for ideal gases makes the following assumptions:

The gas consists of very small particles known as molecules and are negligible compared to the volume of the smallest open ball containing all the molecules.

The rapidly moving particles constantly collide among themselves and with the walls of the container. All these collisions are perfectly elastic. This means, the molecules are considered to be perfectly spherical in shape, and elastic in nature.

Except during collisions,the interactions among molecules are negligible.(That is, they exert no forces on one another).

Velocity will not decrease after collisions as there is no change in energy.

Option A is correct.