BHU PMT BHU PMT (Mains) Solved Paper-2008

  • question_answer
    End product of the following reaction sequence is \[C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow[red\,P]{C{{l}_{2}}}X\xrightarrow[KOH]{Alcoholic}Y\]

    A)  \[C{{H}_{3}}\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,COOH\]       

    B)  \[\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,C{{H}_{2}}COOH\]

    C) \[C{{H}_{2}}=CHCOOH\]              

    D) \[\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,COOH\]

    Correct Answer: C

    Solution :

                     \[C{{H}_{3}}C{{H}_{2}}COOH\xrightarrow[\begin{smallmatrix}  \operatorname{Re}d\,(HVZ \\  reduction) \end{smallmatrix}]{C{{l}_{2}}}C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  Cl \end{smallmatrix}}{\mathop{CH}}\,COOH\]   \[\xrightarrow[-KCl,-{{H}_{2}}O]{Alc\,KOH}\underset{\alpha ,\beta -unsaturated\text{ }acid}{\mathop{C{{H}_{2}}=CHCOOH}}\,\]


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