CMC Medical CMC-Medical Ludhiana Solved Paper-2012

  • question_answer
    \[Z\xrightarrow{PC{{l}_{5}}}X\xrightarrow{Alc.\,\,KOH}Y\xrightarrow[2\,{{H}_{2}}O/\Delta ]{Conc.\,\,{{H}_{2}}S{{O}_{4}}}Z\]Here, Z is

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

    B)  \[{{(C{{H}_{3}})}_{3}}-C-OH\]

    C)  \[C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{C}}\,}}\,-C{{H}_{3}}\]

    D)  None of the above

    Correct Answer: C

    Solution :

                    \[\underset{\begin{smallmatrix}  2\text{-}propanol \\  \,\,\,\,\,\,\,\,\,(Z) \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}}}\,\xrightarrow{PCl{{ & }_{5}}}\underset{\begin{smallmatrix}  2\text{-}chloropropane \\  \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,(X) \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{Cl}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{3}}}}\,\] \[\xrightarrow{Alc.\,\,KOH}\underset{\begin{smallmatrix}  propene \\  \,\,\,\,\,\,(Y) \end{smallmatrix}}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}}}\,\]     \[\xrightarrow{{{H}_{2}}O\,\Delta \,conc.\,\,{{H}_{2}}S{{O}_{4}}}\underset{\begin{smallmatrix}  2-propanol \\  \,\,\,\,\,\,\,\,\,\,(Z) \end{smallmatrix}}{\mathop{C{{H}_{3}}-\underset{OH}{\mathop{\underset{|}{\mathop{CH}}\,}}\,-C{{H}_{2}}}}\,\]


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