A) Calcination
B) Roasting
C) Smelting
D) None of these
Correct Answer: B
Solution :
Roasting involves heating of the ore either alone or with some other material usually in presence of air below its fusion temperature. In roasting, definite chemical changes like oxidation, chlorination etc., take place \[S+{{O}_{2}}\to S{{O}_{2}}\]
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