Question

How do the gases exert pressure?

• A. By hitting each other's particles
• B. By hitting the walls of the container
• C. By hitting each other's particles and the walls of the container
• D. By repelling away each other's particles.

Answer 1

The correct option is B

By hitting the walls of the container

Since particles of gases move in every possible direction, they continuously collide with other particles and also with the walls of the container.
When the particles hit a wall of the container, they exert an unbalanced force on it.
Pressure is defined as force applied per unit area.
Thus, the gases exert a pressure on the walls of the container.