Which one of the following statements is FLASE? – InterviewSolution

1.	Which one of the following statements is FLASE?
Answer» During ROASTING ,MOISTURE is REMOVED from the ore. The ore is freed from almost all nonmetallic impurities. Calcination of ore is carried out in the absence of any blast of air. The concentrated ZINC blende is subjected to calcination zinc blende is subjected to calcination during its extraction by pyrometallurgy. Solution :The concentrated zinc blende (sulphide ore)Is subjected to roasting not to calcination because calcination process is used fot carbonates ores WHEREAS roasting is used for sulphide ores.

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