Question

When gases are heated from ${20}^o$C to ${40}^o$C at constant pressure, the volumes:

• A. Decrease by the same magnitude
• B. Become double
• C. Increase in the ratio of their molecular masses
• D. Increases

Answer 1

The correct option is D Increases

$\frac{V1}{V2}=\frac{T1}{T2}$ at constant pressure

This shows that the volume of the gas is directly proportional to temperature and as the temperature increases similarly volume of the gas will increase proportional to the temperature. Hence (D) is the correct option