Q: What is the name of the process that converts sulphide ores into oxides by heating strongly in the presence of excess air?
(a)Calcination
(b)Roasting
(c)Smelting
(d)Incineration
Correct Answer: (b)
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Q: What is the name of the process that converts sulphide ores into oxides by heating strongly in the presence of excess air?
Correct Answer: (b)