A) \[CuFe{{S}_{2}}\]
B) \[C{{u}_{2}}O+FeS\]
C) \[C{{u}_{2}}S+FeO\]
D) \[FeSi{{O}_{3}}\]
Correct Answer: D
Solution :
In the extraction of copper, the impurities of iron oxide combine with silica (flux) and form insoluble slag. \[FeO+Si{{O}_{2}}\xrightarrow{{}}\underset{slag}{\mathop{FeSi{{O}_{3}}}}\,\]
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