The main difference between calcination and roasting is : (A) Moisture and impurities are removed from ore only by calcinatioi

The main difference between calcination and roasting is :

(A) Moisture and impurities are removed from ore only by calcinatioin

(B) Roasting is used to convert oxide of metal into metal.

(D) Calcination takes place in absence of air while roasting takes place in presence of air

1 Answer

Calcination	Roasting
(A) Ore is heated in the absence of a	Ore is heated ion the presence of air.
(B) It is used for carbonate ores	It is used for sulphide ores.

The main difference between calcination and roasting is : (A) Moisture and impurities are removed from ore only by calcinatioin