JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Concentration

  • question_answer
    Sulphide ores are generally concentrated by [CPMT 1980, 82; EAMCET 1980; MNR 1981; DPMT 1982; KCET 1993]

    A) Froth floatation process

    B) Magnetic separation

    C) Gravity separation

    D) By hand picking

    Correct Answer: A

    Solution :

    Froth floatation method is based on the fact that the surface of sulphide ores is preferentially wetted by oil while that of gangue is wetted by water.


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