In the van der Waals equation for real gases,which of the following terms represents the correction for intermolecular forces?

If $Z$ is a compressibility factor,the van der Waals equation at low pressure can be written as:

When does a gas deviate the most from its ideal behaviour?

$A$ gas at $350 \; K$ and $15 \; bar$ has a molar volume $20$ percent smaller than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor $(Z)$ is

Dominance of strong repulsive forces among the molecules of the gas ($Z =$ compressibility factor)

The van der Waals constants for $HCl$ gas are $a = 3.6 \ atm \ L^2 \ mol^{-2}$ and $b = 40 \ mL \ mol^{-1}$. The critical temperature of the gas is : ............. $K$ [ $R = 0.08 \ atm \ L \ K^{-1} \ mol^{-1}$ ]