Why do we add impurities to electrolyte during electrolytic extraction of metals?

Ni anode is used in the electrolytic extraction of

The best electrolyte for the extraction of magnesium metal is

Why do we get rains?

How do the impurities change during smelting ?

Why do farmers add manure to the soil?

Electrolytic reduction is used in the extraction of

Electrolytic process is used for the extraction of

Why ionic compounds are good electrolytes?

Does the metal present at the anode get directly deposited on the cathode in the electrolytic refining of metals ?