2. Solved Papers
  3. AMU Medical

AMU Medical AMU Solved Paper-2005

  • question_answer
    The equivalent weight of a solid element is found to be 9. If the specific heat of this element is \[105\,J{{g}^{-1}}{{K}^{-1}}\], then its atomic weight is

    A)  17                                         

    B)  21

    C)  25                                         

    D)  27

    Correct Answer: D

    Solution :

                                    Key Idea Atomic weight                 = Equivalent weight \[\times \] valency. Here equivalent weight = 9 Specific heat of element \[=1.05\,\,J\,{{g}^{-1}}{{K}^{-1}}\] By using                 Valency of element \[=\frac{approximate\text{ }weight}{equivalent\text{ }weight}\]                                 \[=\frac{\frac{26.8}{specific\text{ }heat}}{equivalent\text{ }weight}\]                                 \[=\frac{26.8/1.05}{9}\]                                 \[=2.835\approx 3\] \[\because \]     Atomic weight                                 = equivalent weight \[\times \]valency                                 \[=9\times 3=27\]


You need to login to perform this action.
You will be redirected in 3 sec spinner