A) Magnetite
B) Siderite
C) Smithsonite
D) Limonite
E) Haematite
Correct Answer: C
Solution :
Magnetite \[(F{{e}_{3}}{{O}_{4}}),\] Siderite \[(FeC{{O}_{3}}),\]Limonite \[(F{{e}_{2}}{{O}_{3}}.3{{H}_{2}}O)\] and Haematite \[(F{{e}_{2}}{{O}_{3}})\] are ores of Iron. Only Smithsonite is not an ore of Iron.
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