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| Q. |
Aluminium can be purified by – |
| A. | oxidation |
| B. | distillation |
| C. | electrolysis |
| D. | ozonolysis |
| Answer» C. electrolysis | |
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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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