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BHU PMT BHU PMT (Screening) Solved Paper-2005

  • question_answer
    Unit of mole fraction is:

    A)  mol-L                                   

    B) \[mol/{{L}^{2}}\]

    C)  mol/L                                  

    D)  dimensionless

    Correct Answer: D

    Solution :

                     Mole fraction has no unit. It is dimensionless because \[Mole\text{ }fraction=\frac{no.\text{ }of\text{ }moles\text{ }of\text{ }component}{total\text{ }moles}\] The unit of moles get cancelled.


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