Aluminium is extracted from alumina $(A l_{2} O_{3})$ by electrolysis of a molten mixtre of :

A l_{2} O_{3} + N a_{3} A l F_{6} + C a F_{2}

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A l_{2} O_{3} + C a F_{2} + N a A l F_{4}

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A l_{2} O_{3} + H F + N a A l F_{4}

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A l_{2} O_{3} + K F + N a_{3} A l F_{6}

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Solution

The correct option is A $A l_{2} O_{3} + N a_{3} A l F_{6} + C a F_{2}$
The fluorospar $(C a F_{2})$ is added in small quantity in the electrolytic reduction of alumina dissolved in fused cryolite $(N a_{3} A l F_{6})$ .
$A l_{2} O_{3} + N a_{3} A l F_{6} + C a F_{2}$

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Similar questions

Q. Aluminium is extracted from alumina

(A l_{2} O_{3})

by electrolysis.

Q. Aluminum is extracted from alumina (

A l_{2} O_{3}

) by electrolytes of a molten mixture of

Q. Aluminium is extracted by the electrolysis of:

Q. Aluminium is obtained by the electrolysis of pure

A l_{2} O_{3}

, dissolved in:

The following questions relate to the extraction of Aluminium by electrolysis:
(a) Name the other Aluminium containing compound added to Alumina and state its significance.

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Aluminium is extracted from alumina (Al2O3) by electrolysis of a molten mixtre of :

The correct option is A Al2O3+Na3AlF6+CaF2The fluorospar (CaF2) is added in small quantity in the electrolytic reduction of alumina dissolved in fused cryolite (Na3AlF6). Al2O3+Na3AlF6+CaF2

Aluminium is extracted from alumina $(A l_{2} O_{3})$ by electrolysis of a molten mixtre of :

The correct option is A $A l_{2} O_{3} + N a_{3} A l F_{6} + C a F_{2}$
The fluorospar $(C a F_{2})$ is added in small quantity in the electrolytic reduction of alumina dissolved in fused cryolite $(N a_{3} A l F_{6})$ .
$A l_{2} O_{3} + N a_{3} A l F_{6} + C a F_{2}$