Which of the following statement is not true?

Options

A. the ratio of the mean speed to the rms speed is independent of the temperature.
B. the square of the mean speed of the molecules is equal to the square of rms speed at a certain temperature.
C. mean kinetic energy of the gas molecules at any given temperature is independent of the mean speed.
D. the difference between rms speed and mean speed at any temperature for different gases diminishes as larger and yet larger molar masses are considered.

Answer

B