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

If the compressibility factor $(Z)$ of a gas at $STP$ is greater than $1$,then what will be the value of its molar volume $(V_m)$?

$A$ certain gas obeys $P(V_{m}-b)=RT$. The value of $(\frac{\partial Z}{\partial P})_{T}$ is $\frac{xb}{RT}$. The value of $x$ is .... .
(Integer answer) ($Z$: compressibility factor)

According to the $van \ der \ Waals$ equation of state,the pressure exerted by gas molecules on the walls of a container depends on which of the following factors?

What are the corrections made to the pressure and volume of real gases compared to ideal gases?

The $Z$ vs $P$ graph for four gases is given below at the same temperature.
Which of the gases will have the highest value of critical temperature $(T_c)$?