Absolute zero is the temperature at which,

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)?

$A$ mixture of one mole each of $H_2$,$He$ and $O_2$ are enclosed in a cylinder of volume $V$ at temperature $T$. If the partial pressure of $H_2$ is $2 \ atm$,the total pressure of the gases in the cylinder is $....... \ atm$

At $T \ K$ and pressure $P$,the diffusion rate of an ideal gas is $120 \ mL \ min^{-1}$. What is the time taken (in sec.) for $3000 \ mL$ of this gas for diffusion at same temperature and pressure?

Write the formula for partial pressure.

What is viscosity?