Regarding the liquid mixture of 68% nitric acid + 32% water by mass, incorrect statement is

Azeotropic mixture is a constant boiling mixture.

At certain concentration, both liquids boil at same temperature.

It is not possible to separate them by fractional distillation.

68% nitric acid + 32% water is a maximum boiling azeotrope.

Maximum boiling Azeotrope means higher boiling point than any of the two components ( > 373 K );

Lesser vapour pressure than expected from Raoult's law ;

A-B interactions are stronger than A-A and B-B interactions ;

Attractions dominate;

It shows negative deviations from Raoult's law

$$\begin{gathered} ∆{\mathrm{H}}_{\mathrm{mix}}=-\mathrm{ve} ; \\ ∆{\mathrm{V}}_{\mathrm{mix}}=-\mathrm{ve} ; \\ ∆{\mathrm{G}}_{\mathrm{mix}}=-\mathrm{ve} ; \\ ∆{\mathrm{S}}_{\mathrm{mix}}=+\mathrm{ve} ; \end{gathered}$$