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EAMCET Medical EAMCET Medical Solved Paper-2005

  • question_answer
    A compound X undergoes reduction with \[\text{LiAI}{{\text{H}}_{\text{4}}}\] to yield Y. When vapours of Y are passed over freshly reduced copper at \[\text{300}{{\,}^{\text{o}}}\text{C, X}\] formed. What is Y?

    A)  \[C{{H}_{3}}COC{{H}_{3}}\]       

    B)  \[~C{{H}_{3}}CHO\]

    C)  \[C{{H}_{3}}C{{H}_{2}}OH\]       

    D)  \[C{{H}_{3}}OC{{H}_{3}}\]

    Correct Answer: C

    Solution :

                     Aldehydes are reduced by \[\text{LiAl}{{\text{H}}_{\text{4}}}\]to alcohols and alcohols are oxidised by copper to give aldehydes. \[\underset{(X)}{\mathop{C{{H}_{3}}CHO}}\,\xrightarrow{LiAl{{H}_{4}}}\underset{(Y)}{\mathop{C{{H}_{3}}C{{H}_{2}}OH}}\,\xrightarrow[\Delta ]{Cu}\]\[C{{H}_{3}}CHO\]


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