Question:
The process that involves the removal of sulphur from the ores is:
Correct Option:
Solution:
In roasting process, metal sulphide (MS) ore are converted into metal oxide and sulphur is remove in the form of $\mathrm{SO}_{2}$ gas.
$2 \mathrm{MS}+3 \mathrm{O}_{2} \stackrel{\Delta}{\longrightarrow} 2 \mathrm{MO}+2 \mathrm{SO}_{2} \uparrow$
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