CBSE 2026 · Region 1 · Set 1 · Q13 · 1 mark
Assertion (A) : It is not possible to separate the components of an azeotrope by fractional distillation.
Reason (R) : Components of an azeotrope have the same composition in liquid and vapour phase and boil at a constant temperature.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
SolutionsIdeal and Non-ideal SolutionsAnalyseassertion_reasonmedium
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CBSE Class 12 Chemistry past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.