Why are sulphide ores converted to oxide before reduction?

Options

A. Sulphides cannot be reduced easily while oxides can be reduced easily.
B. Sulphides decompose on reduction hence they are first converted to oxides
C. Sulphides ore have higher melting points than oxides.
D. Oxides are more stable than sulphides hence easy to reduce.

Answer

A

Explanation

Thermodynamically based on Ellingham diagram it is observed that sulphides cannot be reduced easily as compared to oxides.