Chemistry · Metallurgy
The process in which sulphide ores are converted into oxides by heating strongly in the presence of excess air is known as ________.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Electrolysis
- 2Refining
- 3Calcination
- 4Roasting✓
Correct answer
Roasting
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