whereas ore B gives 
.
What steps will you take to convert them into metals?
Answer:
(i)
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
(coke). 
(1/2)
(ii) Ore B is a sulphide ore.
Following steps are involved in its extraction
(1/2)
Roasting The sulphide ore is heated strongly in the
presence of excess of air to produce metal oxide.
(1/2)
Reduction Oxides of metal B can be reduced by carbon to
obtain the corresponding metals.
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