States of matter practice · Mixed difficulty

Option A (Dipole-Induced dipole) is correct because dipole-induced dipole forces occur between a polar molecule (dipole) and a nonpolar molecule, where the dipole induces a temporary dipole in the nonpolar species.

Option C (Equal to those in the liquid state) is correct because kinetic energy depends only on temperature, which is constant.

Option B is correct. The inversion temperature (Ti) for a gas is given by $\frac{{2a}}{{Rb}}$.

Option C ($P/2$) is correct because, according to Dalton's Law of Partial Pressures, the total pressure is the sum of the partial pressures. Removing nitrogen halves the total pressure.