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Question

Extraction of aluminium from aluminium oxide (Al2O3) is best done by :

A
electrolytic reduction of Al2O3
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B
reduction of Al2O3 with carbon
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C
reduction of Al2O3 wilh sodium
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D
reduction of Al2O3 with CO
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Solution

The correct option is A electrolytic reduction of Al2O3
Aluminum metal is obtained by the electrolysis of fused alumina.

In this process, fused cryolite and fluorspar are added to alumina and the mixture melts at 900°C and alumina becomes a good conductor of electricity.

Here, metallic Al is liberated at the cathode.

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