Question

The chemical composition of slag formed during the smelting process in the extraction of copper is
(IIT-JEE, 2001)

• A. $C{u}_{2}O+FeS$
• B. $FeSi{O}_3$
• C. $CuFe{S}_2$
• D. $C{u}_{2}S+FeO$

Answer 1

The correct option is B $FeSi{O}_3$

When smelting is done in the blast furnace, most of the ferrous oxide is converted to ferric oxide. With silica, it forms ferrous silicate, which is the slag.
$FeO+Si{O}_2\to FeSi{O}_3$