JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    The formation of alkene from alkyl halide is an example of [CPMT 1983; AMU 1982; Pb. CET 1986]

    A) Addition

    B) Elimination

    C) Substitution

    D) A and C

    Correct Answer: B

    Solution :

    \[\underset{\text{Alkyl halide}}{\mathop{R-C{{H}_{2}}-C{{H}_{2}}-X}}\,\underset{\text{alc}\text{. }KOH}{\mathop{\xrightarrow{\text{Elimination}}}}\,\]\[\underset{\text{Alkene}}{\mathop{R-CH=C{{H}_{2}}}}\,\,\,+\underset{\begin{smallmatrix}  \text{Halogen } \\  \text{acid} \end{smallmatrix}}{\mathop{HX}}\,\]


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