Question

Which is not correct in terms of the kinetic theory of gases?

• A. The space volume to molecules ratio is negligible
• B. All the gas molecules are persistently moving in random directions
• C. The collision between the gas molecules is considered elastic
• D. The gas molecules obey Newton's Laws of motion

Answer 1

The correct option is A

The space volume to molecules ratio is negligible

An explanation for the correct answer:

Option (a)

• It is based on the molecules of matter.
• Gas contains a large number of molecules that are moving in random motion.
• At the ordinary temperature and pressure, the average distance between the molecules is a factor of ten or high than the size of the molecule.
• Interaction between the molecules is negligible.

An explanation of incorrect answer:

Option (b): The molecules of gas are moving in a random motion that collides against one another and with the walls of the container.

Option (c) : When molecules come close together, they exert an intermolecular force and change velocities, and this phenomenon is considered elastic.

Option (d): The gas molecules are moving in a straight line according to Newton's Law of motion.

Therefore, option (a) is correct.