JEE Main & Advanced Chemistry Organic Chemistry: Some Basic Principles & Techniques / कार्बनिक रसायन : कुछ मूलभूत सिद्धांत एवं तकन Question Bank Mock Test - General Principles Processes of Isolation of Elements

  • question_answer
    Copper matte is extracted from copper pyrites ore b) heating it in blast furnace. The method is based on the principle that:

    A) copper has more affinity for oxygen than sulphur at high temperature

    B) iron has less affinity for oxygen than sulphur at high temperature

    C) sulphur has less affinity for oxygen at high temperatun

    D) copper has less affinity for oxygen than sulphur at high temperature

    Correct Answer: D

    Solution :

    [d] \[2CuFe{{S}_{2}}+{{O}_{2}}\to C{{u}_{2}}S+2FeS+S{{O}_{2}}\] (Copper pyrite) \[FeS+\frac{3}{2}{{O}_{2}}\to FeO+S{{O}_{2}}\uparrow \] \[FeO+Si{{O}_{2}}\to FeSi{{O}_{3}}\] (Remain \[C{{u}_{2}}S\] is called matte)


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