Question

A gas exerts pressure on the walls of the container because:

• A. The particles have strong interparticle forces of attraction
• B. The particles move randomly at high speed and hit each other and the walls of container
• C. The particles are at fixed positions
• D. The particles have negligible interparticle spaces

Answer 1

The correct option is B The particles move randomly at high speed and hit each other and the walls of container

In the gaseous state, the particles move randomly at high speed. Due to this random movement, the particles hit each other and also the walls of the container. The pressure exerted by the gas is because of this force exerted by the gaseous particles per unit area on the walls of the container.