A) Cassiterite
B) Magnetite
C) Galena
D) Copper pyrite
Correct Answer: B
Solution :
Magnetite b\[(F{{e}_{3}}{{O}_{4}})\] is an ore of iron. Copper pyrite \[=CuFe{{S}_{2}}\] (ore of Cu) Galena \[=PbS\] Cassiterite = \[Sn{{O}_{2}}\]
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