Question

Which of the following gives silver mirror test with Tollen's reagent?

• A. glucose
• B. fructose
• C. both A & B
• D. none of these

Answer 1

Answer: (C)

both A & B

Glucose and fructose, both give silver mirror test with Tollen's reagent. This test used to distinguish between an aldehyde and a ketone (as it only reacts with an aldehyde). Tollen's reagent, which is a colorless, basic and aqueous solution, containing silver ions coordinated to ammonia $\left[Ag\right(N{H}_3{)}_2{]}^{+}$.