Metallurgy — Easy JEE chemistry MCQ
Aluminium is extracted from bauxite by:
- A. Electrolytic reduction
- B. Carbon reduction
- C. Self-reduction
- D. Thermite process
Solution
Aluminium is highly electropositive and cannot be reduced by carbon. It is extracted by electrolytic reduction of $Al_2O_3$ dissolved in molten cryolite (Hall-Héroult process).