Question

The pressure exerted by the gas is because of:

• A. particles of gas hitting each other.
• B. particles of gas hitting the walls of the containers.
• C. particles of gas being highly compressible.
• D. gas particles have less inter molecular force between them.

Answer 1

The correct option is B

particles of gas hitting the walls of the containers.

Since particles of a gas move in every possible direction, they continuously collide with other particles and also with the walls of the container.

When the particles hit the wall, they exert a force on the wall of the container. This force, when divided by area, gives pressure.