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  3. BCECE Medical

BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    1 g of silver gets distributed between \[10\,\,c{{m}^{3}}\] of molten zinc and \[100\,\,c{{m}^{3}}\] of molten lead at\[{{800}^{o}}C\]. The percentage of silver in the zinc layer is approximately

    A)  89     

    B)  91       

    C)  97      

    D)  94

    Correct Answer: C

    Solution :

    Concentration of Ag in zinc \[=\frac{x}{10}\] \[\therefore \] Concentration of Ag in Pb \[=\frac{1-x}{100}\]                  \[\frac{\frac{x}{10}}{\frac{1-x}{100}}=300\] On solving, we get \[x=97%\] 


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