A) \[~FeSi{{O}_{3}}\]
B) \[~F{{e}_{2}}{{O}_{3}}\]
C) \[FeSi\](solid)
D) \[~FeSi\] (vapour)
Correct Answer: A
Solution :
During the extraction of copper the impurity \[(FeS)\] is removed as slag by mixing the contaminated copper ore with silica and coke. \[2FeS+3{{O}_{2}}\xrightarrow{{}}2FeO+2S{{O}_{2}}\] \[FeO+\underset{\text{silica}}{\mathop{Si{{O}_{2}}}}\,\xrightarrow{{}}\underset{\begin{smallmatrix} \text{Ferrous}\,\text{silicate} \\ \,\,\,\,\,\,\,\,\,\,\,\,\text{(slag)} \end{smallmatrix}}{\mathop{FeSi{{O}_{3}}}}\,\]
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