Question
Chemistry Question on General Principles and Processes of Isolation of Elements
Heating of ore in presence of air to remove sulphur impurity is called
A
Calcination
B
Roasting
C
Smelting
D
None of these
Answer
Roasting
Explanation
Solution
Roasting involves heating of the ore either alone or with some material usually in the presence of air below its fusion temperature. In roasting, definite changes like oxidation, chlorination etc., take place