JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    In which of the following, addition of \[HBr\] does not take place against Markownikoff's rule or Anti-Markownikoff addition of \[HBr\] is not observed for [IIT-JEE 1985; CBSE PMT 1994; MADT Bihar 1995; MP PMT 1999; AMU 2002]

    A) Propene

    B) But-1-ene

    C) But-2-ene

    D) Pent-2-ene

    Correct Answer: C

    Solution :

      \[C{{H}_{3}}-CH=CH-C{{H}_{3}}+HBr\xrightarrow{\text{Peroxide}}\]\[\underset{2-\text{Bromobutane}}{\mathop{\begin{array}{*{35}{l}}    C{{H}_{3}}-C{{H}_{2}}-\underset{|}{\mathop{C}}\,H-C{{H}_{3}}  \\    \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br  \\ \end{array}}}\,\] Anti-markownikoff?s rule is not applicable to symmetrical alkenes.


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