1.

Which set of oxide does not used in slag formation during extraction of Copper.(a) FeO(b) Al2O3(c) ZnO(d) NiO(e) CaO(1) a, b(2) b, c, d(3) a, e(4) a, c

Answer»

Correct option is (2) b, c, d

During extraction of Cu following slag formation reaction takes place.

\(FeO + \underset{Flux }{SiO_2} → \underset{ Slag}{FeSiO_3   }              \)



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