Chemistry - Metallurgy Question with Solution | TestHub

Carbon reduction can be employed to get Pb from PbS when impurity content is high

Self-reduction can be employed to get Pb from PbS when impurity content is low.

The obtained lead is hard due to the presence of impurity like $\mathrm{Cu},\mathrm{Sn},\mathrm{As},\mathrm{Sb},\mathrm{Bi}$ etc

$\left({\mathrm{PbSiF}}_6+{\mathrm{H}}_2{\mathrm{SiF}}_6\right)$ is used as electrolyte for its electrorefining