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Fructose reduces Tollen’s reagent due to

$\begin{array}{1 1}(a)\;\text{Presence of ketonic group}\\(b)\;\text{Presence of }NH_4OH\text{ in Tollen's reagent}\\(c)\;\text{Rearrangement of fructose into a mixture of glucose fructose and mannose}\\(d)\;\text{Both (b) and (c)}\end{array} $

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1 Answer

Fructose is a ketone and thus should not act as a reducing agent, but due to the presence of $NH_4OH$ in Tollen’s reagent it rearranges into a mixture of glucose, fructose and mannose.
Hence (d) is the correct answer.
answered Mar 26, 2014 by sreemathi.v

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