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NEET Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Self Evaluation Test - Hydrocarbons

  • question_answer
    In the presence of peroxide, \[HCl\] and HI do not give anti-Markownikoff's addition of alkenes because:

    A) One of the steps is endothermic in \[HCl\] and HI

    B) Both \[HCl\] and HI are strong acids

    C) \[HCl\] is oxidizing and the HI is reducing

    D) All the steps are exothermic is \[HCl\] and HI

    Correct Answer: A

    Solution :

    [a] Anti-Markownikoff addition is possible only in case of \[HBr\] and not in \[HCl\] and HI. In \[HBr\] both the chain initiation and propagation steps are exothermic, while in\[HCl\], first step is exothermic, and second step is endothermic and in HI, no step is exothermic. Hence \[HCl\] and HI do not undergo anti- Markownikoff's addition.


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