NEET Chemistry NEET PYQ-Aldehydes Ketones

  • question_answer
    Aldol condensation will not take place in: [AIPMT 1999]

    A) \[HCHO\]

    B) \[C{{H}_{3}}CHO\]

    C) \[C{{H}_{3}}COC{{H}_{3}}\]

    D) \[C{{H}_{3}}C{{H}_{2}}CHO\]

    Correct Answer: A

    Solution :

    [a] Aldol condensation in aldehydes is due to presence of \[\alpha \]-hydrogen atoms. In these aldehydes \[HCHO\] does not have \[\alpha \]-hydrogen atom. So, \[HCHO\] does not give aldol condensation reaction.


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