Home Chemistry Alcohol, Phenol and Ether General An alcohol A, when heated with conc. H2SO4 g…
Chemistry Alcohol, Phenol and Ether General Single Correct MCQ
Published on: August 13, 2026

An alcohol A, when heated with conc. H2SO4 gives an alkene B. When B is bubbled through bromine

water and the product obtained is dehydro-halogenated with excess of sodamide, a new compound C is obtained. The compound C gives D when treated with warm dilute H2SO4.in presence HgSO4. D can also be obtained either by oxidising A with KMnO4 or from acetic acid through its calcium salt. Identify A, B, C and D.

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Text Solution

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The correct answer is:
D

Sol. (i) Since D is also obtained by distillation of

calcium acetate as well as by oxidation of A by

KMnO4. Hence, D is acetone and A is propan-2-ol.

2 Ca 2CH 3 COCH 3 + 2CaCO 3

Calcium acetate Acetone

(ii) A on treatment with conc. H2SO4 gives B

(iii) B reacts with Br2 and subsequent dehydro—

bromination by NaNH2 produces C.

(iv) C with dil.H2SO4 in presence of HgSO4 gives D.

Hence,

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