On the top of a mountain,water boils at

The temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure is known as:

The rate of diffusion of a gas is directly proportional to which of the following?

Given below are two statements.
Statement $I$: Viscosity of liquid decreases with increase in temperature.
Statement $II$: The units of viscosity are $kg \ m^{-1} \ s^{-2}$.
The correct answer is

Cooking is fast in a pressure cooker,because

$A$ vessel of volume $V \ L$ contains an ideal gas at $T \ K$. The vessel is partitioned into two equal parts. The volume (in $L$) and temperature (in $K$) in each part is respectively