A) \[F{{e}_{2}}{{O}_{3}}-3{{H}_{2}}O\]
B) \[FeS\]
C) \[Fe{{S}_{2}}\]
D) \[F{{e}_{2}}{{S}_{3}}\]
Correct Answer: C
Solution :
Iron-pyrites\[(Fe{{S}_{2}})\]is the sulphide ore of iron.
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