Question

Bauxite, the ore of aluminium, is purified by which process?

• A. Hoope?s process
• B. Hall?s process
• C. Mond?s process
• D. Liquation process

Answer 1

Answer: (B)

Hall?s process

Answer 2

(i) Hall's process is the major industrial process for smelting aluminium. It involves dissolving aluminium oxide in molten cryolite and electrolysing the molten salt bath

(ii) Hoope's process or electrolytic refining is used to refine the obtained aluminium metal which is not $100 \%$ pure.

(iii) Mond's process is used to refine nickel.

(iv) Liquation process is used to refine a metal with low melting point like tin, bismuth, lead, mercurv etc.