A) both \[CaSi{{O}_{3}}\]
B) both \[FeSi{{O}_{3}}\]
C) \[CaSi{{O}_{3}}\] and \[FeSi{{O}_{3}}\]
D) \[FeSi{{O}_{3}}\] and \[CaSi{{O}_{3}}\]
Correct Answer: C
Solution :
Extraction of Fe from haematite ore: \[CaC{{O}_{3}}\xrightarrow{\Delta }\,CaO+C{{O}_{2}};\] \[CaO+Si{{O}_{2}}\xrightarrow{\Delta }\,CaSi{{O}_{3}}\] Extraction of Cu from copper pyrites: \[2CuFe{{S}_{2}}+4{{O}_{2}}\xrightarrow{\Delta }\,C{{u}_{2}}S\,+2FeO\,+3S{{O}_{2}};\]\[FeO+Si{{O}_{2}}\xrightarrow{\Delta }\,FeSi{{O}_{3}}\]
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