Identify the correct statement with reference to the extractive metallurgy of aluminium ?

A. Approximately 80% of the aluminium deposited on the cathode comes from cryolite

B. Sodium is deposited along with aluminium, but is immediately vaporised

C. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3

D. Anode effect sets in when the cryolite concentration goes below 40%.

Found an error? Read our corrections policy and submit a sourced correction below. You can also share a useful explanation in your own words.

Discuss the answer or suggest a sourced correction
Thank you for contributing.
Your comment was submitted and will appear after editorial review.

Your email is used only for moderation and is never displayed. Spam, copied material and fabricated endorsements are rejected.