JCECE Engineering JCECE Engineering Solved Paper-2007

  • question_answer
    In the extraction of copper from its sulphide ore, the metal is formed by reduction of\[C{{u}_{2}}O\] with

    A) \[FeS\]                                

    B) \[CO\]

    C) \[C{{u}_{2}}S\]                 

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

    Correct Answer: A

    Solution :

    The copper metal is mainly extracted from its sulphide ore, copper pyrites\[(CuFe{{S}_{2}})\]. The \[C{{u}_{2}}O\]obtained can be reduced to copper by treating with\[FeS\].                 \[C{{u}_{2}}O+FeS\xrightarrow{{}}FeO+C{{u}_{2}}S\]                 \[2C{{u}_{2}}S\xrightarrow{3{{O}_{2}}}2C{{u}_{2}}O+2S{{O}_{2}}\]                 \[2C{{u}_{2}}O+C{{u}_{2}}S\xrightarrow[{}]{{}}6Cu+S{{O}_{2}}\]


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