Question

Suprabhat

ExPlain purification of aluminium ore.​

Answer 1

Answer:

Aluminium ore is called bauxite . The bauxite is purified to produce aluminium oxide, a white powder from which aluminium can be extracted. The extraction is done by electrolysis. The ions in the aluminium oxide must be free to move so that electricity can pass through it.

Answer 2

Explanation:

Explain briefly the extraction of aluminium from bauxite.

Electrolytic reduction of pure alumina takes place in iron box (cathode) with cryolite (Na3AlF6) and fluorspar (CaF2) which lowers the melting point and increases the conductivity of electrolyte. Graphide rods act as anode.