Q
Identify the correct statement with reference to the extractive metallurgy of aluminium ?
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A
A. The electrolyte consists of molten na3alf6 with approximately 1 to 8% al2o3
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B
B. Approximately 80% of the aluminium deposited on the cathode comes from cryolite
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C
C. Sodium is deposited along with aluminium, but is immediately vaporised
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D
D. Anode effect sets in when the cryolite concentration goes below 40%.
Correct Answer:
A. A. The electrolyte consists of molten na3alf6 with approximately 1 to 8% al2o3
