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  4. The process that involves the removal of sulphur from the ores is :

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Q. The process that involves the removal of sulphur from the ores is :

JEE MainJEE Main 2021General Principles and Processes of Isolation of Elements

Solution:

In roasting process, metal sulphide (MS) ore are converted into metal oxide and sulphur is remove in the form of $SO _{2}$ gas.
$2 MS +3 O _{2} \stackrel{\Delta}{\longrightarrow } 2 MO +2 SO _{2} \uparrow$