Bauxite containing impurities of iron oxide is purified by
WEBElectrolytic process. Medium. Solution. Verified by Toppr. Correct option is C) The Bayer process is the principal industrial method of refining bauxite to produce alumina (aluminium oxide Al 2O 3). Bauxite, the most important ore of aluminium, contains only 30–54% aluminium oxide, (alumina). Hence option C is correct.