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JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Refining of crude Metal

  • question_answer
    Silver obtained from argentiferrous lead containing lead impurity is purified by [CPMT 1981; MP PMT 1990; EAMCET 1998]

    A) Distillation

    B) Froth floatation

    C) Cupellation

    D) Treatment of \[KCN\]

    Correct Answer: C

    Solution :

    Cupellation: If metal possess the impurity of another metal which forms volatile oxide. Then cupellation method is used.


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