According to kinetic theory of gases, for a datomic molecule.

Options

A. The pressure exerted by the gas is proportional to the mean velocity of the molecule.
B. The pressure exerted by the gas is proportional to the root mean velocity of the molecule.
C. The root mean square velocity of the molecule is inversely proportional to the temperature.
D. The mean translational kinetic energy of the molecule is proportional to the absolute temperature.

Explanation

To solve the question regarding the kinetic theory of gases for a diatomic molecule, we will analyze each statement provided in the question step by step.

### Step 1: Analyze the first statement
**Statement:** Pressure exerted by gas is proportional to the mean velocity of the molecule.

- According to the kinetic theory of gases, the average velocity (v) of gas molecules can be expressed as:
\[
v = \sqrt{\frac{8RT}{\pi m}}
...