Question

Which of the following factors in of no significance for roasting sulphide ores to oxides & not subjecting the sulphide ores to carbon reduction directly?

• A. Metal sulphide are less stable than corresponing oxides
• B. Metal sulphide are thermo dynamically more stable then $C{S}_2$
• C. $C{O}_2$ in more volatite then $C{S}_2$
• D. $C{O}_2$ in thermo dynamically more stable then $C{S}_2$

Answer 1

The correct option is A Metal sulphide are less stable than corresponing oxides

Metal sulphides are more stable than metal oxides due to which it is difficult to extract metal from its sulphide. Due to this, metal sulphides are first converted to oxides and then extracted from it.