Question

Concentration of sulphide ore is done by the calcination method.

• A. True
• B. False
• C. Ambiguous
• D. None of the above

Answer 1

Answer: (B)

False

Froth Floatation method is the method used for the concentration of sulphide ores. The method is based on the different wetting characteristics of the gangue and the sulphide ore.

Calcination: The ore is heated to a high temperature below its melting point in the absence of air or in a limited supply of air.

example - zinc carbonate decomposes to give zinc oxide and carbon dioxide

Hence, the given statement is false. Option B is the correct answer.