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12th Class Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank MCQs - Haloalkanes and Haloarenes

  • question_answer
    1-chlorobutane on reaction with ale. KOH forms

    A) 1-butene

    B) 2-butane

    C) 1-butanol

    D) 2-butanol

    Correct Answer: A

    Solution :

    [a]
    \[\underset{1\,-\,chlorobu\operatorname{tane}}{\mathop{C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}}}\,Cl+\underset{(Alc.)}{\mathop{KOH}}\,\to \underset{1-butene}{\mathop{C{{H}_{3}}C{{H}_{2}}CH=C{{H}_{2}}}}\,+KCl+{{H}_{2}}O\]
    When 1-chlorobutane is treated with alc. KOH, then 1-butene gets formed along with KCl and water.


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