The ratio of specific heat at constant pressure $(C_p)$ to specific heat at constant volume $(C_v)$ for a diatomic gas is ...........

$X \ mL$ of $H_2$ gas effuses through a hole in a container in $5 \ s$. The time taken for the effusion of the same volume of the gas specified below under identical conditions is:

Equal amounts of two gases of molecular weights $4$ and $40$ are mixed. The pressure of the mixture is $1.1 \ atm$. What will be the partial pressure of the lighter gas in the mixture (in $atm$)?

Where will the boiling point be lower: at the seashore or on a mountain? Why?

Which physical property decreases with an increase in intermolecular forces?

The ratio of the rate of diffusion of a given element to that of helium is $1.4$. The molecular weight of the element is