RAJASTHAN ­ PET Rajasthan PET Solved Paper-2011

  • question_answer
    The number of optical isomers of\[C{{H}_{3}}CH(OH)CH(OH)CHO\]is

    A)  2            

    B)  3

    C)  6              

    D)  4

    Correct Answer: D

    Solution :

     \[\underset{\begin{align}   & | \\  & H-{{C}^{*}}-OH \\  & | \\  & CHO \\ \end{align}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{H-{{C}^{*}}-OH}}}\,\] Possible number of optical isomers\[={{2}^{n}}\]      \[={{2}^{2}}=4\]


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