Question : Which of the following is an ore of Aluminium?
Option 1: Galena
Option 2: Cryolite
Option 3: Cinnabar
Option 4: Epsom Salt
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Correct Answer: Cryolite
Solution : The correct option is Cryolite .
Cryolite is a mineral that was once used in the aluminium extraction process but is no longer widely used. It has the chemical formula Na 3 AlF 6 , which indicates that it comprises sodium, aluminium, and fluoride ions. Cryolite has a low melting point, making it useful as a flux in the electrolytic reduction process used to obtain aluminium metal from its source, bauxite.
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