What is the term given to the extraction of aluminium from bauxite by using electrochemical process?
A
Baeyer’s process
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B
Hall-Heroult process
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C
Mc-Arthur process
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D
Blasts process
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Solution
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.