JEE Main & Advanced Sample Paper JEE Main Sample Paper-15

  • question_answer
    \[\text{M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\begin{smallmatrix}  \text{O} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-}\overset{\text{18}}{\mathop{\text{O}}}\,\text{-CM}{{\text{e}}_{\text{3}}}\xrightarrow[{}]{dil.\,{{H}_{2}}S{{O}_{4}}}\]. Product of this reaction and the mechanism is:

    A) \[\text{M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\begin{smallmatrix}  \text{O} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-OH+M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\text{18}}{\mathop{\text{O}}}\,\text{H,}\,{{\text{A}}_{\text{A}{{\text{C}}^{\text{l}}}}}\]

    B) \[\text{M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\begin{smallmatrix}  {{\text{O}}^{\text{18}}} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-OH+M}{{\text{e}}_{\text{3}}}\text{C-OH,}\,{{\text{A}}_{\text{A}{{\text{L}}^{\text{l}}}}}\]

    C) \[\text{M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\begin{smallmatrix}  \text{O} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-OH+M}{{\text{e}}_{\text{3}}}\text{C-}\overset{18}{\mathop{\text{O}}}\,\text{H,}\,{{\text{A}}_{\text{A}{{\text{C}}^{2}}}}\]

    D) \[\text{M}{{\text{e}}_{\text{3}}}\text{C-}\overset{\begin{smallmatrix}  \text{O} \\  \text{ }\!\!|\!\!\text{  }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}\,\text{-}\overset{\text{18}}{\mathop{\text{O}}}\,\text{H+M}{{\text{e}}_{\text{3}}}\text{C-OH,}\,{{\text{A}}_{\text{A}{{\text{L}}^{\text{2}}}}}\]

    Correct Answer: B

    Solution :

    Esters which give stable carboction reacts with\[{{\text{A}}_{\text{A}{{\text{L}}^{\text{1}}}}}\]Mech.


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