Question

Bauxite containing impurities of iron oxide is purified by :

• A. Hoop's process
• B. Serpeck's process
• C. Bayer's process
• D. Electrolytic process

Answer 1

The correct option is C Bayer's process

The Bayer process is the principal industrial method of refining bauxite to produce alumina (aluminium oxide $A{l}_2{O}_3$). Bauxite, the most important ore of aluminium, contains only 30–54% aluminium oxide, (alumina).
Hence option C is correct.