JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    Ethene when treated with \[B{{r}_{2}}\] in the presence of \[CC{{l}_{4}}\] which compound is formed [RPMT 1997; DCE 2001; KCET (Med.) 1999]

    A) 1, 2-dibromoethane

    B) 1-bromo-2-chloroethane

    C) Both A and B

    D) 1, 1, 1-tribromoethane

    Correct Answer: A

    Solution :

    \[C{{H}_{2}}=C{{H}_{2}}+B{{r}_{2}}\xrightarrow{CC{{l}_{4}}}\underset{\begin{smallmatrix}  \text{1, 2-dibromo } \\  \text{ethane} \end{smallmatrix}}{\mathop{\underset{Br\,\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,}{\mathop{C{{H}_{2}}}}\,}}\,-\underset{\underset{Br\,\,\,\,}{\mathop{|\,\,\,\,\,\,\,}}\,}{\mathop{C{{H}_{2}}}}\,}}\,\]


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