Air at sea level is dense. This is a practical application of

At a certain temperature, the time required for the complete diffusion of $200 \ mL$ of $H_2$ gas is $30 \ min$. The time required for the complete diffusion of $50 \ mL$ of $O_2$ gas at the same temperature will be: (in $min$)

The rate of diffusion of two gases $x$ and $y$ is $10 \ mL/sec$ and $40 \ mL/sec$ respectively. The ratio of their molar masses $(Mw)_{x} : (Mw)_{y}$ is:

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

What is the difference between $STP$ (or $NTP$) and $SATP$?

Which one of the following statements is wrong for gases?