MHT CET 2023 Physics question

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

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

Answer: (D)

Solution

In the kinetic theory of an ideal gas the pressure arises from the collisions of the gas molecules with the walls of the container (the rate of change of momentum per unit area of the wall), not from collisions between the molecules themselves. So the statement in option

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Question ID VK-094692