Aluminium is obtained by

Options

(a) reducing Al₂O₃ with coke
(b) electrolysing Al₂O₃ dissolved in Na₃AlF₆
(c) reducing Al₂O₃ with chromium
(d) heating Al₂O₃ and cryolite

Correct Answer:

electrolysing Al₂O₃ dissolved in Na₃AlF₆

Explanation:

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