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

  • question_answer
    Extraction of zinc from zinc blende is achieved by

    A) roasting followed by self-reduction

    B) electrolytic reduction

    C) roasting followed by reduction with carbon

    D) roasting followed by reduction with another metal

    Correct Answer: C

    Solution :

    [c] Extraction of Zn from zinc blends is achieved by roasting followed by reduction with carbon. Reactions involved are: \[2ZnS+3{{O}_{2}}\xrightarrow{heat}2ZnO+2S{{O}_{2}}\left( Roasting \right)\] \[ZnO+C\left( Coke \right)\xrightarrow{heat}Zn+CO\left( Reduction \right)\]


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