# Identify the correct statement with reference to the extractive metallurgy of aluminium ? with Answer - Chemical Engineering Mcqs | TestPrep

> Solved MCQ: Identify the correct statement with reference to the extractive metallurgy of aluminium ? Correct Answer: A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3. Verified answer explanation for FPSC, PPSC, MDCAT, NTS, and CSS competitive exam preparation.

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

Direct Answer & Quick Reference

The correct option is **A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3**.

A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3 **(Correct Answer)**

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

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

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

Verified Key: A. The electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3
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