BHU PMT BHU PMT (Screening) Solved Paper-2010

  • question_answer
    Which of the following molecules fails to exhibit optical activity?

    A)  \[C{{H}_{2}}Cl-CHDBr\]

    B)  \[C{{H}_{3}}CHC{{l}_{2}}\]

    C)  \[C{{H}_{3}}CHDCl\]

    D)  \[C{{H}_{2}}H-CHClC{{H}_{3}}\]

    Correct Answer: B

    Solution :

                     Chirality (ie, presence of asymmetric carbon atom) is the necessity for exhibiting optical activity. Thus,\[C{{H}_{3}}CHC{{l}_{2}},\]because of the lack of asymmetric carbon atom, does not exhibit optical isomerism.


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