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. \[2FeS+3{{O}_{2}}\xrightarrow{{}}2FeO+2S{{O}_{2}}\] \[FeO+\underset{silica}{\mathop{Si{{O}_{2}}}}\,\xrightarrow[{}]{{}}~\underset{\begin{smallmatrix} ferrous\text{ }silicate \\ \,\,\,\,\,\,\,\,\,\,\,(slag) \end{smallmatrix}}{\mathop{FeSi{{O}_{3}}}}\,\]
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