Giving suitable example, describe the importance of the formation of complex compounds in the extraction of particular metal from its natural source.

Options

A. `"Tin stone" overset("Magnetic")overset("separation")to SnO_(2)overset("Self")overset("reduction")tounderset(Sn("pure"))underset(" "darr"distillation")(Sn("impure"))`
B. `"Red Bauxite" overset("Serpeck.s")overset("process")to Al_(2)O_(3)overset("Electrolytic")overset("reduction")tounderset(" "Al("pure"))underset(underset("refining")("Electrolytic")darr)(" "Al("impure"))`
C. `"Galena" overset("Forth")overset("Floatation")to PbSoverset({:("Partial"),("roasting"):})underset({:("+Self"),("rduction"):})tounderset(" "Pb("pure"))underset(underset("refining")("Electrolytic")darr)(" "Pb("impure"))`
D. `"Haematite" overset("Leaching by")overset("NaOH")to Fe_(2)O_(3)overset("Carbon")overset("reduction")tounderset(" "Fe("pure"))underset(underset("refining")("Electrolytic")darr)(" "Fe("impure"))`

Answer

C