Question

Arrange the following relevant points in a proper sequence to explain why gases exert pressure.

• A. 3 1 4 5 6
• B. 3 2 4 6 5
• C. 3 4 1 6
• D. 3 4 1 5 6

Answer 1

The correct option is C

3 4 1 6

Explanation for the correct option:

The proper sequence to explain why gases exert pressure is as follows:

1. A gas is made up of tiny particles called molecules.
2. Intermolecular forces of attraction are negligible in gases.
3. Gas molecules are in random motion.
4. During random motion, the gas molecules collide with the walls of a container.

Explanation for the incorrect options:

• During random motion, the gas molecules collide with each other but it does not contribute to pressure.
• Kinetic energy of gas molecules is proportional to absolute temperature but it does not fit in the proper sequence to explain why gases exert pressure.

So the options containing these two points are incorrect.

Hence option (c) is correct.