Which of the following statement is/are true? According to kinetic theory of gase

Options

A. Collisions are always elastic.
B. Heavier molecules transfer more momentum to the wall of the container.
C. Only a small number of molecules have very high velocity.
D. Between collisions, the molecules move in straight lines with constant velocities.

Explanation

(`a`) True
(`b`) `P=sqrt(2m) KE`, `KE` is same at same temperature. So, pressure is high, if `m` is higher.
(`c`) True
(`d`) True