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JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2013

  • question_answer
    Cartisone is a molecular substance containing 21 atoms of carbon per molecule. The mass percentage of carbon in cortisone is 69.98%. Its molar mass is

    A)  176.5                   

    B)  252.2

    C)  287.6                   

    D)  360.1

    Correct Answer: D

    Solution :

                    Let molar mass be\[=m\] Mass of 21 carbon atoms = 252 % of carbon\[=\frac{252\times 100}{m}=69.98;m=360.1\]


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