At a given temperature,the rate of diffusion of methane is twice that of gas $X$. The molecular weight of $X$ is ...... .

Two gases $A$ and $B$ having the same volume,effuse through an orifice in $30$ and $10$ minutes respectively. The molar mass of $A$ is $162$. The molar mass of $B$ will be

The ratio of the partial pressure of a gaseous component to the total vapor pressure of the mixture is equal to .......

$CO_2$ and $N_2$ do not support combustion. However,$CO_2$ is preferred over $N_2$ for extinguishing fires because $CO_2$ .......

Which of the following is not considered in the calculation of the rate of diffusion according to Graham's Law?

The ratio $\gamma$ for inert gases is