JEE Main & Advanced Sample Paper JEE Main Sample Paper-26

  • question_answer
    \[Ph-C{{H}_{2}}-CH=C{{H}_{2}}\xrightarrow{dil.{{H}_{2}}S{{O}_{4}}}\]Identify product 'X' is :

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

    B)  \[Ph-\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}\,}}\,-\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}\]     

    C)  \[Ph-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{C}}\,}}\,-\overset{\begin{smallmatrix}  H \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  H \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{3}}\]

    D)  \[Ph-C{{H}_{2}}-OH\]

    Correct Answer: C

    Solution :

    \[Ph-C{{H}_{2}}-\overset{\oplus }{\mathop{C}}\,H-C{{H}_{3}}\,\xrightarrow{1,2{{H}^{-}}\,shift}\] \[Ph-\overset{\oplus }{\mathop{C}}\,H-C{{H}_{2}}-C{{H}_{3}}\,\xrightarrow{{{H}_{2}}\overset{\begin{smallmatrix}  .\,\,. \\  .\,\,. \end{smallmatrix}}{\mathop{O}}\,:}\] \[Ph-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}-C{{H}_{3}}\]


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