Question

Which of the following sugar can not reduce Tollen's reagent?​

Answer 1

Answer: Hence, it does not able to reduce the Tollen's reagent. ie, structure P is not a reducing sugar, while in structure Q one ring present in the form of hemiacetal, therefore it will hydrolyse in solution and it can reduce Tollen's reagent ie, structure Q is a reducing sugar.

Answer 2

Answer:

Like acetaldehyde and formic acid phenylhydro-oxylamine is a powerful reducing agent Thus it reduces ammonical silver nitrate (Tollens reagent ) and Fehling s solution Nitrobenzene fails to do so.

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