First slide

Fructose

Question

(+)-Glucose and (-)-Fructose can be differentiated by

Moderate

A

Tollen's reagent
B

Benedict solution
C

Bromine water
D

None of these

Solution

Bromine, a mild oxidising agent, oxidises only glucose (aldoses, in general) to gluconic acid. Tollen's reagent and Fehling solution, being alkaline in nature, cause isomerization of fructose to glucose hence both of them react with these reagents.

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