JEE Main & Advanced Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank Properties of Halogen Containing Compounds

  • question_answer
    Dehydrohalogenation of an alkyl halide is [MP PMT 1996]

    A) An addition reaction

    B) A substitution reaction

    C) An elimination reaction

    D) An oxidation reaction

    Correct Answer: C

    Solution :

               Alkyl halide gives alkene on elimination, reaction takes place in presence of alc. KOH.                    \[C{{H}_{3}}C{{H}_{2}}Br+Alc\,.\,KOH\to C{{H}_{2}}=C{{H}_{2}}+KBr+{{H}_{2}}O\]                    There are two types of elimination reactions.                     \[{{E}_{1}}\to \] Unimolecular elimination  \[{{E}_{2}}\to \] Bimolecular elimination


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