Question

Which of the following pairs give positive Tollen’s test?

• A. Glucose,sucrose
• B. Glucose,fructose
• C. Hexanal,acetophenone
• D. Fructose,sucrose

Answer 1

Answer: (B)

Aldehydes and $\alpha$-hydroxy ketones give positive Tollen's test. Glucose is a polyhydroxy aldehyde and fructose is an $\alpha$-hydroxy ketone.