Q. Which of the following pairs give positive Tollen’s test?
A) Glucose , sucrose
B) Glucose , fructose
C) Hexanal, acetophenone
D) Fructose, sucrose
Explanation
(b)
Aldehydes and $\alpha -$hydroxy ketones give positive Tollen’s test. Glucose has an aldehyde group and fructose is an $\alpha -$hydroxy ketone.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.