Ore A is a carbonate ore. The steps involved in its extraction are (1/2)
(a) Calcination The carbonate ore is heated strongly in the limited
supply of air to produce metal oxide. (1/2)
(b) Reduction to metal The oxide ore is reduced with C
(ii) Ore B is a sulphide ore.
Following steps are involved in its extraction
Roasting The sulphide ore is heated strongly in the
presence of excess of air to produce metal oxide.
Reduction Oxides of metal B can be reduced by carbon to
obtain the corresponding metals.
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