Assuming ideal gas behaviour identify the option which is incorrect as per assumption involved in KTG, speed distribution and bimolecular collisions:

Options

A. Average molar translational KE depends only upon absolute temperature
B. Lighter gases will have more uniform speed distribution pattern as compared to heavier gases at same temperature
C. All the molecules of heavier gas will move at a slower speed as compared to any molecule of a lighter gas
D. Collision frequency is directly proportional to square root of absolute temperature in a closed rigid vessel.

Answer

C

Explanation

All the molecules of heavier gas will move at a slower speed as compared to any molecule of a lighter gas