Biomolecules Question 118

Question: Which of the following pairs give positive Tollen’s test-

Options:

A) Glucose, sucrose

B) Glucose, fructose

C) Hexanal, acetophenone

D) Fructose, sucrose

Show Answer

Answer:

Correct Answer: B

Solution:

[b] Glucose contains aldehyde group, positive Tollen’s test. Fructose although contains ketone group, undergoes a rearrangement to form glucose and mannose which then responds to Tollen’s test.