NEET UG CHEMISTRY MCQ: STATES OF MATTER

Assertion: The pressure of a gas is directly proportional to the density of gas at a constant temperature and molecular mass.

Reason: The molecular weight of a vapour of a substance can be calculated using the expression $M=\frac{d R T}{P}$, where $M$ is the molecular weight of the vapour, $d$ is its density and $P$ is the pressure of the vapour, ${R}$ is the gas constant and ${T}$ is the temperature.