Q.

Aluminium can be purified by –

A. oxidation
B. distillation
C. electrolysis
D. ozonolysis
Answer» C. electrolysis
Explanation: Electrolysis is a method of using a direct electric current (DC) to drive an otherwise non-spontaneous chemicaireaction. Electrolysis is commercially highly important as a stage in the separation of elements from naturally occurring sources such as ores using an electrolytic cell. Aluminum is extracted from its oxide ore "Bauxite".
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