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Biomolecules question

2010 · Q57
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Biomolecules question

2010 · Q57

NEETChemistryBiomoleculesMCQ+4 / −1
Fructose reduces Tollen's reagent due to
  1. A
    asymmetric carbons
  2. B
    primary alcoholic group
  3. C
    secondary alcoholic group
  4. D
    enolisation of fructose followed by conversion to aldehyde by base
View written solutionFree

Correct answer: 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 –CHO group and hence reduce Tollens’ reagent to give silver mirror test.

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