Chemistry · Solutions and Colligative Properties

JEE Main 2025 — 8 April, Evening Shift — Question 5

Which of the following binary mixture does not show the behaviour of minimum boiling azeotropes?

Option A:
$\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}+\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}$
Correct
Option B:
$\mathrm{H}_{2} \mathrm{O}+\mathrm{CH}_{3} \mathrm{COC}_{2} \mathrm{H}_{5}$
Option C:
$\mathrm{CH}_{3} \mathrm{OH}+\mathrm{CHCl}_{3}$
Option D:
$\mathrm{CS}_{2}+\mathrm{CH}_{3} \mathrm{COCH}_{3}$

Answer: A

The solution showing positive deviation from

Raoult's law will form minimum boiling azeotrope.

Phenol + Aniline shows negative deviation, so they will not form minimum boiling azeotrope

Answer key and solution verified before publishing.

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