J & K CET Medical J & K - CET Medical Solved Paper-2003

  • question_answer
    Which of the following compounds react with \[HBr\]obeying Markownikoffs rule?

    A)  \[C{{H}_{2}}=C{{H}_{2}}\]

    B)  

    C)  

    D)  

    Correct Answer: D

    Solution :

                    According to Markownikoffs rule the addition of a reagent (HX) to an unsymmetrical alkene takes place in such a way that the negative part of the reagent will be attached to the carbon atom which contains lesser number of \[H\]atom. \[\underset{2-methylpropene}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}}}\,+HBr\xrightarrow{{}}C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  Br \\  | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}\]


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