Question

Electrode used for electrometallurgy of metals is ______.

Options

• iron as cathode and graphite as anode

• graphite as cathode and iron as anode

• graphite as cathode and platinum as anode

• none of the above

Answer 1

Electrode used for electrometallurgy of metals is iron as cathode and graphite as anode.

Explanation:

In the extraction (electrometallurgy) of highly reactive metals like sodium (Down's process), a cylindrical iron vessel acts as the cathode and a central graphite rod acts as the anode.