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NEET Chemistry Metallurgy / धातुकर्म Question Bank Self Evaluation Test - General Principals and Process of Isolation of Elements

  • question_answer
    In the extraction of copper from its sulphide ore, the metal finally obtained by the reduction of cuprous oxide with

    A) iron (II) sulphide

    B) carbon monoxide

    C) copper (I) sulphide

    D) sulphur dioxide

    Correct Answer: A

    Solution :

    [a] Highly electropositive metals like Al, K, Na etc. are extracted by the electrolytic reduction. zone refining method is used for obtaining metals of high purity e.g. Ge Froth flotation process is suitable for sulphide ores Cyanide process is used for the extraction of gold.


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