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Copper is the most noble of the first transition metals and occurs in small deposits in several countries. Ores of copper include chalcanthite `(CuSO_(4).5H_(2)O)`, atacamite `(Cu_(2)Cl(OH)_(3))`, cuprite `(Cu_(2)O)`, copper glance `(Cu_(2)S)` and malachite `(Cu_(2)(OH)_(2)CO_(3))`. Howerver `80%` of the world copper production comes from the ore chalcopyrites `(CuFeS_(2))` the extraction of copper from chalcopyrites involves partial roasting of iron and self reduction. Q. Partial roasting of chalcopyrites with silica added to it, produces,A. `FeSiO_(3)`B. `Fe_(2)O_(3)`C. `Cu_(2)S`D. `CuO` |
| Answer» Correct Answer - A::C | |