_______ is added to lower the melting point of alumina in the Hall-Heroult process.

Bauxite

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Coke

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Carnallite

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Cryolite

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Solution

The correct option is D Cryolite

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Similar questions

Which of the following are added to concentrated alumina during the electrolytic reduction of alumina to aluminium by Hall-Heroult process?

Electrolytic reduction of alumina to aluminium by Hall-Heroult process is carried out:

N a_{3} A l F_{6}

A l_{2} O_{3}

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