Copper is the most noble among the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcopyrite `(CuFeS_(2))`, cuprite `(Cu_(2)O)`, copper glance `(Cu_(2)S)` and malachite `[CyCO_(3).Cu(OH)_(2)]`. However 80% of the world copper production comes from the ore chalcopyrite `(CuFeS_(2))`. the extraction of copper from chalcopyrite involves partial roasting , removal of ironand self-reduction. Partial roasting of chalcopyrite producesA. `Cu_(2)S` and FeOB. `Cu_(2)` and FeOC. CuS and `Fe_(2)O_(3)`D. `Cu_(2)O " and " F_(2)O`

Copper is the most noble among the first row transition metals and occ

1.	Copper is the most noble among the first row transition metals and occurs in small deposits in several countries. Ores of copper include chalcopyrite `(CuFeS_(2))`, cuprite `(Cu_(2)O)`, copper glance `(Cu_(2)S)` and malachite `[CyCO_(3).Cu(OH)_(2)]`. However 80% of the world copper production comes from the ore chalcopyrite `(CuFeS_(2))`. the extraction of copper from chalcopyrite involves partial roasting , removal of ironand self-reduction. Partial roasting of chalcopyrite producesA. `Cu_(2)S` and FeOB. `Cu_(2)` and FeOC. CuS and `Fe_(2)O_(3)`D. `Cu_(2)O " and " F_(2)O`
Answer» Correct Answer - A `2CuFeS_(2)+4O_(2) overset("heat") to Cu_(2)S+2FeO+3SO_(2)`

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