J & K CET Medical J & K - CET Medical Solved Paper-2006

  • question_answer
    In the following reaction, A and B, respectively are: \[\underline{A}\xrightarrow[{}]{HBr}{{C}_{2}}{{H}_{5}}Br,\xrightarrow[{}]{B}\underline{A}\]

    A)  \[{{C}_{2}}{{H}_{4}},alc\,KOH/\Delta \]

    B)  \[{{C}_{2}}{{H}_{5}}Cl,aq\,KOH/\Delta \]

    C)  \[C{{H}_{3}}OH,aq\,KOH/\Delta \]

    D)  \[{{C}_{2}}{{H}_{2}},\,PB{{r}_{3}}\]

    Correct Answer: A

    Solution :

                    \[\underset{(A)}{\mathop{{{H}_{2}}C=C{{H}_{2}}}}\,\xrightarrow[{}]{HBr}C{{H}_{3}}C{{H}_{2}}Br\] \[\xrightarrow[\Delta ]{alc.\,KOH}\underset{(A)}{\mathop{{{H}_{2}}C=C{{H}_{2}}}}\,\] Hence,       \[A={{C}_{2}}{{H}_{4}}\] B = ale.\[KOH/\Delta \]


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