First slide

Fructose

Question

Regarding naturally occuring Fructose, incorrect statement is

Moderate

A

Its relative configuration is D
B

It is laevo rotatory
C

It is a Keto hexose
D

It is a non reducing sugar

Solution

Its relative configuration is D. It resembles D-glyceraldehyde in its configuration at its highest stereogenic centre.
Even though it is a ketose, it is a reducing sugar.
It reduces Tollen's, Fehling's and Benedict's reagents due to Lobry-de bruyn van ekenstein rearrangement.

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