VIT Engineering VIT Engineering Solved Paper-2009

  • question_answer
    What are X and Y in the following reaction sequence? \[Alkyne\xrightarrow[Lindlars\,\,catalyst]{{{H}_{2}}}A\xrightarrow{Ozonolysis}\underset{only}{\mathop{B}}\,\]

    A)  \[\xleftarrow[\Pr ocess]{Wac\ker }C{{H}_{2}}=C{{H}_{2}}\]

    B)  \[{{H}_{3}}C-C\equiv C-C{{H}_{3}}\]

    C)  \[{{H}_{3}}C-C{{H}_{2}}-C\equiv CH\]

    D)  \[{{H}_{2}}C=CH-C\equiv CH\]

    Correct Answer: C

    Solution :

      \[C{{H}_{3}}C{{H}_{2}}OH+C{{l}_{2}}\xrightarrow[-2HCl]{}\underset{\begin{smallmatrix}  X \\  acetaldehyde \end{smallmatrix}}{\mathop{C{{H}_{3}}CHO}}\,\] \[\xrightarrow[-3HCl]{3C{{l}_{2}}}\underset{\begin{smallmatrix}  Y \\  chloral \end{smallmatrix}}{\mathop{CC{{l}_{3}}CHO}}\,\]


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