Chemistryhard · Past Paper
Which of the following is used as an electrolyte in the Hall-Heroult process?
AMolten Alumina
BAlumina dissolved in Cryolite and Fluorspar
CAluminum sulphate solution
DMolten Bauxite
✓ Correct Answer: B — Alumina dissolved in Cryolite and Fluorspar
Pure alumina is dissolved in a mixture of molten cryolite and fluorspar to facilitate electrolysis.
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