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  4. In the electrolysis of alumina, cryolite is added to:

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Q. In the electrolysis of alumina, cryolite is added to:

The p-Block Elements

Solution:

Cryolite $(Na_{2}AlF_{6})$ is added to $Al_{2}O_{3}$ before electrolysis to lower the fusion temperature of bauxite in order to dissolve it and to make it a good conductor of current.