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NEET Chemistry NEET PYQ-Aldehydes Ketones

  • question_answer
    Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagents is                               [NEET 2015 (Re)]

    A) a Grignard reagent

    B) hydrazine in presence of feebly acidic solution

    C) hydrocyanic acid        

    D) sodium hydrogen sulphite

    Correct Answer: B

    Solution :

    [b] Reaction of carbonyl compounds with ammonia derivatives give addition product followed by the elimination reaction. Slightly acidic medium generate a nucleophilic centre for the attack of weak base like ammonia derivatives.


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