Question

What is the term given to the extraction of aluminium from bauxite by using electrochemical process?

• A. Baeyer’s process
• B. Hall-Heroult process
• C. Mc-Arthur process
• D. Blasts process

Answer 1

The correct option is B Hall-Heroult process

Hall-Heroult process is a smelting process to reduce bauxite to a nearly pure aluminium. Bauxite is dissolved in a molten electrolyte composed of sodium, fluorine and aluminium and is maintained at a high temperature. In this process aluminium is accumulated at the cathode and oxygen gas at the anode.