RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    \[C{{H}_{3}}-CH=C{{H}_{2}}+HBr\xrightarrow[{}]{{}}A;\] compound A is

    A)  \[\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-CH=C{{H}_{2}}\]

    B)  \[C{{H}_{3}}-C{{H}_{2}}-C{{H}_{2}}Br\]

    C)  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}\]

    D)  \[\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\]

    Correct Answer: C

    Solution :

     \[\underset{propene}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}}}\,+HBr\to \underset{2\text{ }-bromo\text{ }propane}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}}}\,\]


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