Question

How many metallic ores are concentrated by magnetic separation method from the given ores?
Cassiterite, Pyrolusite, Rutile, Magnetite, Galena, Cinnabar

Answer 1

Four metallic ores [Cassiterite $\left(Sn{O}_2\right)$, Pyrolusite $\left(Mn{O}_2\right)$, Rutile $\left(Ti{O}_2\right)$ and Magnetite $\left(F{e}_3{O}_4\right)$] are concentrated by magnetic separation method. It is based on the difference in the magntic properties of the ore components.