MHT CET 2022 Physics question

According to the kinetic theory of gases, which of the following statements is WRONG?

(A)The pressure exerted by a gas is due to the collisions between the molecules of the gas.Correct
(B)Collisions between the molecules of a gas and that of the molecules with the walls of the containers are perfectly elastic
(C)All molecules of a gas are identical
(D)The molecules do not exert appreciable force on one another except during collision

Answer: (A)

Solution

In the kinetic theory the pressure of a gas arises from the continual collisions of the molecules with the walls of the container (the rate of change of momentum per unit area of the wall), not from collisions among the molecules themselves. So statement (A) is wrong. Statement (B) is a

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Question ID VK-094246