NEET AIPMT SOLVED PAPER SCREENING 2012

  • question_answer
    In the following sequence of reactions, \[C{{H}_{3}}-Br\xrightarrow[{}]{KCN}A\xrightarrow[{}]{{{H}_{3}}{{O}^{+}}}B\xrightarrow[ether]{LiAl{{H}_{4}}}C\] the end product (C) is

    A) acetone   

    B)                        methane                            

    C)   acetaldehyde    

    D)        ethyl alcohol

    Correct Answer: D

    Solution :

    \[\underset{methyal\,bromide}{\mathop{C{{H}_{3}}Br}}\,\xrightarrow[-KBr]{KCN}\underset{\begin{smallmatrix}  ethane\,nitrile \\  'A' \end{smallmatrix}}{\mathop{C{{H}_{3}}CN}}\,\xrightarrow[{}]{{{H}_{3}}{{O}^{+}}}\underset{\begin{smallmatrix}  ethanoic\,aicd \\  'B' \end{smallmatrix}}{\mathop{C{{H}_{3}}COOH}}\,\]\[\xrightarrow[ehter]{LiAl{{H}_{4}}}\underset{\begin{smallmatrix}  ethanol \\  'C' \end{smallmatrix}}{\mathop{C{{H}_{3}}C{{H}_{2}}OH}}\,\]


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