Question

How many metallic ores are concentrated by the magnetic separation method from the given ores?
Cassiterite, pyrolusite, rutile, magnetite, galena, cinnabar.

Answer 1

Magnetic separation is the process of separating components of mixtures by using magnets to attract magnetic materials.
Four metallic ores (Cassiterite $Sn{O}_2$​ , Pyrolusite $Mn{O}_2$​ , Rutile $Ti{O}_2$​ and Magnetite $F{e}_3{O}_4$​) are concentrated by magnetic separation method.
It is based on the difference in the magntic properties of the ore components.