Question

Aliminuim cannot be extracted by elctrolysis of alumina

Answer 1

Aluminium ore is called bauxite. The bauxite is purified to yield a white powder -aluminium oxide - from which aluminiumcan be extracted. The extraction is done by electrolysis. ... Instead, it is dissolved in moltencryolite - an aluminium compound with a lower melting point than aluminium oxide.
hope it helps
by Raunac

Answer 2

Aluminium ore is called bauxite. The bauxite is purified to yield a white powder - aluminium oxide - from which aluminium can be extracted. The extraction is done by electrolysis. ... Instead, it is dissolved in moltencryolite - an aluminium compound with a lower melting point than aluminium oxide.