In the extraction of copper from copper pyrites

CHEMISTRY · Single correct · CBSE · Chemistry · Metals and Non-metals · Metals and Non-metals

Problem

In the extraction of copper from copper pyrites, iron is removed as : (1)

\text{FeSO}_4

(2)

\text{FeSiO}_3

(3)

\text{Fe}_3\text{O}_4

(4)

\text{Fe}_2\text{O}_3