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Copper pyrite or chalcopyrite (CuFeS2) is the main ore of copper. The extraction of copper from its…
Copper pyrite or chalcopyrite (CuFeS2) is the main ore of copper. The extraction of copper from its ore involves, concentration, partial roasting, removal of iron and self- reduction.
(i)[1.0]
On heating the mixture of Cu2O and Cu2S, which one of the following will be obtained?
- (a)Cu2SO3
- (b)Cu + SO3
- (c)CuO + CuS
- (d)Cu + SO2
(ii)[1.0]
Iron is removed during the extraction of copper as:
- (a)FeO
- (b)FeS
- (c)FeSiO3
- (d)Fe2O3
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From ISC 2022 Chemistry - Specimen paper (Semester 1), Paper 1, question 32.