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BCECE Engineering BCECE Engineering Solved Paper-2014

  • question_answer
    g of silver gets distributed between \[\text{1}0\text{ c}{{\text{m}}^{\text{3}}}\]of molten zinc and \[\text{1}00\text{ c}{{\text{m}}^{\text{3}}}\]of molten lead at\[\text{8}00{}^\circ \text{ C}\]. 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 \[x\text{ }=\text{ }97%\]


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