JCECE Engineering JCECE Engineering Solved Paper-2012

  • question_answer
    Alcoholic \[KOH\] is used for

    A)  dehydration

    B)  dehydrogenation

    C)  dehydrohalogenation

    D)  dehalogenation

    Correct Answer: C

    Solution :

    \[C{{H}_{3}}-C{{H}_{2}}Br+KOH(alc.)\xrightarrow{\text{dehydrohalogenation}}\]\[C{{H}_{2}}=C{{H}_{2}}+KBr+{{H}_{2}}O\] In alcoholic\[KOH\], alkoxide ion \[(R\bar{O})\] is present which is a strong base favour elimination reaction.


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