Question

Which reagent is used to differenciate between aldehyde and ketone?

• A. Fehling's solution
• B. Tollen's reagent
• C. Schiff's reagent
• D. All of these

Answer 1

Answer: (D)

Fehling solution is Alkaline $CuS{O}_4+Na-K$ tartarate

Tollen’s reagent is $N{H}_{4}OH+AgN{O}_3$

Schiff’s reagent is $p-$ rosaniline hydrochloride or magneta

All these reagents are used to distinguish between aldehydes and ketones. Aldehydes reacts with all these reagents while ketones do not react.