Home Chemistry Biomolecules NEET Previous Year Question Fructose reduces Tollens ’ reagent due to
Chemistry Biomolecules NEET Previous Year Question Single Correct MCQ
Published on: August 12, 2026

Fructose reduces Tollens ’ reagent due to

A
asymmetric carbons
B
primary alcoholic group
C
secondary alcoholic group
D
enolisation of fructose followed by conversion to aldehyde by base

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The correct answer is:
D

Under alkaline conditions of the reagent, fructose gets converted into a mixture of glucose and mannose (Lobry de Bruyn van Ekenstein rearrangement) both of which contain the group and hence reduce Tollens’ reagent to give silver mirror test.

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