Chemistry - Real Gas Question with Solution | TestHub

Below $T_B$ the curve dips below $Z=1$ at low pressure, and the lower the temperature, the deeper the dip and the steeper the later rise.

$T_2$ has the deepest dip and the steepest rise, so it is the lowest temperature. $T_3$ is next and $T_1$ has the shallowest dip.

All three dip below 1, so all are below $T_B:T_2<T_3<T_1<T_B$.

Answer: (C).