EAMCET Medical EAMCET Medical Solved Paper-2009

  • question_answer
    Which one of the following statements is true for the optical rotation exhibited by (2R, 3R) and (2S, 3S) dibromobutanes?

    A)  The direction and magnitude are same.

    B)  The direction is opposite, but magnitude is same.

    C)  The direction is same, but magnitude is different.

    D)  Both the direction and magnitude are different.

    Correct Answer: B

    Solution :

                     R and S configuration is based on the actual three-dimensional formula of the compound. R is given to the isomer if sequence is left to right whereas, S is given to the isomer if sequence is right to left. Thus, both the isomers are opposite in direction but same in magnitude.


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