JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Reduction to free Metal

  • question_answer
    After partial roasting, the sulphide of copper is reduced by [MP PMT 1993]

    A) Reduction by carbon

    B) Electrolysis

    C) Self-reduction

    D) Cyanide process

    Correct Answer: C

    Solution :

    Self reduction:- Reduction of oxide ore of a metal by its own sulphide \[2C{{u}_{2}}O+C{{u}_{2}}S\to 6Cu+S{{O}_{2}}\]


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