Name a compound added to lower the fusion temperature of electrolytic bath in the extraction of aluminium.

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Solution

Cryolite is a compound added to lower the fusion temperature of the electrolyte bath in the extraction of aluminium.
Cryolite $({Na}_{3} {AlF}_{6})$ lowers the fusion temperature from $2050 ° C$ to $950 ° C$ and enhances conductivity.
Hence, cryolite is a compound added to lower the fusion temperature of the electrolyte bath in the extraction of aluminium.

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