Manipal Medical Manipal Medical Solved Paper-2011

  • question_answer
    \[Ca{{C}_{2}}+{{H}_{2}}O\xrightarrow[{}]{{}}A\xrightarrow[{}]{{{H}_{2}}S{{O}_{4}}/HgS{{O}_{4}}}B\] Identify A and B in the given reaction

    A) \[{{C}_{2}}{{H}_{2}}\]and\[C{{H}_{3}}CHO\]

    B) \[C{{H}_{4}}\]and\[HCOOH\]

    C) \[{{C}_{2}}{{H}_{4}}\]and\[C{{H}_{3}}COOH\]

    D) \[{{C}_{2}}{{H}_{2}}\] and\[C{{H}_{3}}COOH\]

    Correct Answer: A

    Solution :

     \[Ca{{C}_{2}}+2{{H}_{2}}O\xrightarrow[{}]{{}}\underset{(A)}{\mathop{{{C}_{2}}{{H}_{2}}}}\,+Ca{{(OH)}_{2}}\] \[\underset{CH}{\overset{CH}{\mathop{|||}}}\,\xrightarrow[{}]{Dill.\,{{H}_{2}}S{{O}_{4}}/HgS{{O}_{4}}}\underset{CHOH}{\overset{C{{H}_{2}}}{\mathop{|||}}}\,\xrightarrow[{}]{{}}\underset{\begin{smallmatrix}  \,\,\,\,\,\,\,\,\,\,\,(B) \\  acetaldehyde \end{smallmatrix}}{\mathop{C{{H}_{3}}CHO}}\,\]


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