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Which of the following pairs give positi...

Which of the following pairs give positive Tollens test?

A

Glucose, Sucrose

B

Glucose, fructose

C

Hexanal, acetophenone

D

Fructose,sucrose

Text Solution

Verified by Experts

The correct Answer is:
B
Glucose is an aldehyde, gives positive Tollens test. Fructose although ketone gives positive Tollens test because under the basic conditions of the reagent, fructose undergoes a rearrangement to form glucose and mannose `(C-2 "epimer of glucose")`.
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