Question

Which of the following postulate of kinetic theory of matter states that collisions are perfectly elastic?

• A. Gas molecules are in constant random motion
• B. When collisions occur, the molecules lose no kinetic energy
• C. Molecules can collide with each other and with the walls of the container
• D. All of above

Answer 1

Answer: (B)

When collisions occur, the molecules lose no kinetic energy

When collisions occur, the molecules lose no kinetic energy; that is, the collisions are said to be perfectly elastic. The total kinetic energy of all the molecules remains constant unless there is some outside interference.

Hence, the correct option is $\text{B}$