The electrochemical extraction of aluminum from bauxite ore…

Maths JEE - Advanced Previous Year Paper JEE-Advanced-2022-Paper-1 Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

The electrochemical extraction of aluminum from bauxite ore involves

the reaction of A1 2 O 3 with coke

the neutralization of aluminate solution by passing CO 2 gas to precipitate hydrated alumina (A1 2 O 3 -3H 2 O).

at a temperature > 2500 °C. the dissolution of A1 2 O 3 in hot aqueous NaOH.

the electrolysis of A1 2 O 3 mixed with Na 3 AlF 6 to give Al and CO 2 .

Text Solution

Verified by Experts

The correct answer is:

During electrolysis of alumina, cryolite and fluorspar are added to decrease the melting point of alumina.

Al metal is obtained at cathode while releases at anode.

──────────────────────────────────────────────────────────────────────────────────────────

Previous Question Next Question

Get practice questions, solutions, and test series in one place.

Share your experience with this question and solution.

Send your comment, doubt, correction, or feedback to admin.

What students say about this solution

No reviews yet. Be the first to write a review.