Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed…

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is:
  1. A Grignard reagent
  2. Hydrazine in presence of feebly acidic solution
  3. Hydrocyanic acid
  4. Sodium hydrogen sulphite

Solution

Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water.
The reagent is hydrazine in presence of feebly acidic solution.
For example, the reaction between acetone and hydrazine to form hydrazone is shown below.

Asked in: NEET 2015 (Phase 2)

Practice more Aldehydes, Ketones and Carboxylic Acids questions on Aicharya