Single correct option
The principal ore of aluminium is
- A. haematite
- B. galena
- C. bauxite
- D. cinnabar
Show answer and solution
Answer: (C) bauxite
Bauxite, mainly hydrated aluminium oxide, is the chief ore of aluminium and is refined by the Bayer process, followed by electrolysis in the Hall-Heroult process. Haematite is an ore of iron, galena of lead and cinnabar of mercury. India has large bauxite reserves in Odisha.
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