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Q.

The main requirements for roasting process in

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a

the ore is heated in a regular supply of air

b

the sulphide ores of copper are heated in reverberatory furnace

c

2ZnS+3O2⟶2ZnO+2SO2 is a reaction that involves roasting process

d

Mg, Al and Zn oxides can be reduced by roasting process

answer is A.

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Detailed Solution

Every sulphide can be converted into oxide by roasting process with a regular supply of air.
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