Minerals from which metals can be extracted economically and easily are called ores. The extraction of metals from theirs ores involves the following processes.
(i) Concentration
(ii) Calcination |roasting | leaching (iii) Reduction. It is carried out by one of the following methods.
(a) Carbon |carbon monoxide reduction. (b) Self reduction. (c) Electrolytic reduction. (d) Reduction by more electropositiv metal (i.e displacement method).
Which of the following reaction does not occur in Bessener converter in the extraction of copper from chalcopyrites.
A. `2Cu FeS_(2)+O_(2) rarr Cu_(2)S+2FeS+SO_(2)`
B. `FeO+SiO_(2) rarrFeSiO_(3)`
C. `2FeS+3O_(3) rarr 2FeO+2SO_(2)`
D. `Cu_(2)S+2Cu_(2)O rarr 6Cu+SO_(2)`
