Identify the correct graph for an ideal gas ($y$-axis $= Z$; $x$-axis $= p$).

For one mole of a van der Waals gas when $b=0$ and $T=300 \ K$,the $PV$ vs. $1/V$ plot is shown below. The value of the van der Waals constant $a$ (in $\text{atm} \cdot \text{liter}^2 \cdot \text{mol}^{-2}$) is:

Gas deviates from ideal gas nature because molecules

The $Van \text{ der } Waals$ equation explains the behaviour of

For a real gas,the ratio $\frac{T_{C} \text{ (Critical temperature)}}{P_{C} \text{ (Critical pressure)}}$ is equal to:

The deviation from the ideal gas equation $PV = nRT$ is maximum under which of the following conditions?