JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    When 2-bromobutane reacts with alcoholic KOH, the reaction is called [KCET (Med.) 2001]

    A) Halogenation

    B) Hydrogenation

    C) Chlorination

    D) Dehydro-halogenation

    Correct Answer: D

    Solution :

     \[C{{H}_{3}}-\underset{\underset{Br\,}{\mathop{|\,\,\,\,}}\,}{\mathop{CH}}\,-C{{H}_{2}}-C{{H}_{3}}\xrightarrow{alc.\,KOH}\underset{\text{2-butene}}{\mathop{C{{H}_{3}}CH=CHC{{H}_{3}}}}\,\] The reaction is dehydrohalogenation.


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