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

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

To determine which statements are true according to the kinetic theory of gases (KTG), we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement 1: Collisions are always elastic.**
- According to the kinetic theory of gases, when gas molecules collide with each other or with the walls of the container, these collisions are considered elastic. This means that there is no net loss of kinetic energy in the system during the collisions.
- **Conclusion:** This statement is **true**.

...