Which of the following reduces Tollens' reage | vedclass

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(D) Tollens' reagent is reduced by all sugars that contain a free aldehyde group or those that can isomerize to form an aldehyde group in an alkaline

Vedclass · Accepted Answer

All of the above

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(D) Tollens' reagent is reduced by all sugars that contain a free aldehyde group or those that can isomerize to form an aldehyde group in an alkaline medium. $1$. Glucose is an aldose and contains a free aldehyde group,so it reduces Tollens' reagent. $2$. Fructose,although a ketose,undergoes tautomerization in the alkaline medium of Tollens' reagent to form an aldose,thus it also reduces Tollens' reagent. $3$. Lactose is a reducing sugar because it contains a free hemiacetal group,which allows it to exist in equilibrium with its open-chain aldehyde form. Therefore,all the given options reduce Tollens' reagent.

Which of the following reduces Tollens' reagent?

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