Which physical property decreases with an increase in intermolecular forces?

At $T \ K$,a gaseous mixture of $H_2$ and $O_2$ containing $20 \%$ (weight/weight) of $H_2$ exerts a total pressure of $2 \ bar$. What is the partial pressure of $O_2$ (in bar)?

The ratio of rates of diffusion of $SO_2$,$O_2$ and $CH_4$ is

$80 \, mL$ of $O_2$ takes $2$ minutes to pass through a hole. What volume of $SO_2$ will pass through the same hole in $3$ minutes?

$360 \ cm^3$ of a hydrocarbon diffuses in $30$ minutes, while under the same conditions $360 \ cm^3$ of $SO_2$ gas diffuses in one hour. The molecular formula of the hydrocarbon is

The ratio of the rate of diffusion of helium and methane under identical conditions of pressure and temperature will be