Question

Which from following is a formula of cryolite?

विकल्प

• BaSO₄

• Na₃AlF₆

• Ca₃(PO₄)₂

• CaF₂

Answer 1

Na₃AlF₆

Explanation:

Cryolite is the mineral sodium hexafluoroaluminate, formula Na₃AlF₆. It was historically used as a flux/electrolyte in aluminium smelting because alumina dissolves readily in molten cryolite, lowering the melting point of the bath.