MCQ
What will happen during roasting?
- ✓The sulphide ores are converted into oxides.
- BThe oxide ores are converted into sulphides.
- CThe sulphide ores are converted into carbonates.
- DThe oxide ores are converted into carbonates.
✓
Answer
Correct option: A.
The sulphide ores are converted into oxides.
During roasting, the sulphide ores are converted into oxides by heating strongly in excess of air.
$\mathrm{ZnS}+3 \mathrm{O}_2 \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_2$
$\mathrm{ZnS}+3 \mathrm{O}_2 \rightarrow 2 \mathrm{ZnO}+2 \mathrm{SO}_2$
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