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Carbohydrates

D-glucose D...

Question

D-glucose & D-fructose can be differentiated by :

Fehling solution

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Tollens reagent

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Benedict test

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B r_{2} / H_{2} O

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Solution

The correct option is D $B r_{2} / H_{2} O$
$B r_{2} / H_{2} O$ being a mild oxidising agent can only oxidise aldose to carboxylic acids but cannot oxidise ketose.

As glucose contains aldehyde group it gets oxidised and converted into a carboxylic acid and is differentiate from fructose which has ketone group.

Therefore, the correct option is D.

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