JEE Main & Advanced Chemistry Metallurgy / धातुकर्म Question Bank Roasting and Calcination

  • question_answer
    The slag obtained during the extraction of copper from copper pyrites is composed mainly of [MNR 1993; MP PMT 1997; UPSEAT 2000, 01;  IIT-JEE Screening 2001]

    A) \[CaSi{{O}_{3}}\]

    B) \[FeSi{{O}_{3}}\]

    C) \[CuSi{{O}_{3}}\]

    D) \[Si{{O}_{2}}\]

    Correct Answer: B

    Solution :

    \[\underset{\text{Im}\text{purity}}{\mathop{FeO}}\,+\underset{\text{Flux}}{\mathop{Si{{O}_{2}}}}\,\to \underset{\text{Slag}}{\mathop{FeSi{{O}_{2}}}}\,\]


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