Q .     Copper is the most noble of the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite `(CuSO_4 ⋅ 5H_2O)` , atacamite `(Cu_2 Cl(OH)_3)` , cuprite `(Cu_2O)` , copper glance `(Cu_2 S)`
and malachite `(Cu_2 (OH)_2CO_3)` . However, 80% of the world copper production comes from the ore of chalcopyrite `(CuFeS_2)`. The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction.
Partial roasting of chalcopyrite produces

JEE 2010 ADVANCED Paper 1
A

`Cu_2S` and `FeO`

B

`Cu_2O` and `FeO`

C

`CuS` and `Fe_2O_3`

D

`Cu_2O` and `Fe_2O_3`

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