JEE Main & Advanced Sample Paper JEE Main Sample Paper-3

  • question_answer
    An organic compound A \[({{C}_{4}}{{H}_{10}}O)\]has two enantiomeric forms and on dehydration it gives B (major product) and C (minor product). B and C are treated with HBr/ Peroxide and the compounds so produced were subjected to alkaline hydrolysis then-

    A)  B will give an isomer of A

    B)  C will give an isomer of A

    C)  Neither of them will give isomer of A

    D)  Both B and C will give isomer of A

    Correct Answer: B

    Solution :

     Entailers of \[{{C}_{4}}{{H}_{10}}O\] are \[\left. {{\text{H}}_{\text{3}}}\text{C}{{\text{H}}_{\text{2}}}\text{C}-\underset{\begin{smallmatrix}  \text{ }\!\!|\!\!\text{ } \\  \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix}  \text{OH} \\  \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{C}{{\text{H}}_{\text{3}}} \right|{{\text{H}}_{\text{3}}}\text{C}-\underset{\begin{smallmatrix}  \text{ }\!\!|\!\!\text{ } \\  \text{H} \end{smallmatrix}}{\overset{\begin{smallmatrix}  \text{HO} \\  \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,-\text{C}{{\text{H}}_{2}}\text{C}{{\text{H}}_{\text{3}}}\] \[\text{C}{{\text{H}}_{\text{3}}}\text{C}{{\text{H}}_{\text{2}}}-\underset{\text{A}}{\overset{\begin{smallmatrix}  \text{OH} \\  \text{ }\!\!|\!\!\text{ } \end{smallmatrix}}{\mathop{\text{C}}}}\,\text{H}-\text{C}{{\text{H}}_{\text{3}}}\xrightarrow[{}]{{{H}_{2}}S{{O}_{4}}}\] \[\text{C}{{\text{H}}_{\text{3}}}\underset{\text{Major}\,\text{(B)}}{\mathop{\text{CH}\,\text{=}\,\text{CH}}}\,-\text{C}{{\text{H}}_{\text{3}}}\text{+C}{{\text{H}}_{\text{2}}}\text{=}\underset{\text{Minor}\,\text{(C)}}{\mathop{\text{CHC}{{\text{H}}_{\text{2}}}}}\,\text{C}{{\text{H}}_{\text{3}}}\]


You need to login to perform this action.
You will be redirected in 3 sec spinner