A) \[F{{e}_{3}}{{O}_{4}}\]
B) \[ZnC{{O}_{3}}\]
C) \[CuC{{O}_{3}}.Cu{{(OH)}_{2}}\]
D) \[Fe{{S}_{2}}\]
Correct Answer: A
Solution :
The ore magnetite is \[\text{F}{{\text{e}}_{\text{3}}}{{\text{O}}_{\text{4}}}\text{.}\]
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