Question

According to kinetic theory of gases, for a diatomic gas

• A. The pressure exerted by the gas is proportional to mean velocity of the molecule.
• B. The root mean square velocity of the molecule is inversely proportional to the temperature.
• C. The average K.E. of gas is proportional to the temperature
• D. On increasing pressure average molecular speed increases

Answer 1

The correct option is C The average K.E. of gas is proportional to the temperature

According to kinetic theory, mean translational kinetic energy $\left(ϵ\right)=\frac{3}{2}{k}_{B}T$.

Where, $k_B$ is the Boltzmann's constant.

Thus, kinetic energy is directly proportional to temperature.

Hence, the correct option is $C$