RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    \[C{{H}_{3}}-C\equiv CH+{{H}_{2}}O\xrightarrow[{}]{{{H}^{+}}/H{{g}^{2+}}}X,\]Compound X, is

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

    B)  \[C{{H}_{3}}C{{H}_{2}}COOH\]

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

    D)  \[C{{H}_{3}}-CH=C{{H}_{2}}\]

    Correct Answer: C

    Solution :

     \[\underset{propyne}{\mathop{C{{H}_{3}}}}\,-C\equiv CH+{{H}_{2}}O\xrightarrow[{}]{{{H}^{+}}/H{{g}^{2+}}}\] \[\underset{enolic\text{ }form\text{ }of\text{ }acetone}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,\equiv C{{H}_{2}}}}\,\underset{acetone}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,\equiv C{{H}_{3}}}}\,\]


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