CUET · CHEMISTRY · PYQ PAPER 2023
"In the extraction of Al metal from Bauxite ore, the correct sequence of various processes involved is:
A. Heating the ore to remove volatile impurities.
B. Electrolysis of molten ore-mixture.
C. Leaching of alumina with concentrated NaOH.
D. Grading and crushing of big ore particles.
E. Mixing alumina with \(\text{CaF}_2\) or \(\text{Na}_3\text{AlF}_6\).
Choose the correct answer from the options given below:"
- A D, B, C, A, E
- B D, A, C, B, E
- C D, C, A, E, B
- D D, B, C, A, E
Answer & Solution
Correct Answer
(C) D, C, A, E, B
Step-by-step Solution
Detailed explanation
The correct sequence of processes involved in the extraction of Al metal from Bauxite ore is: 1. D. Grading and crushing of big ore particles. 2. C. Leaching of alumina with concentrated NaOH (Bayer process). 3. A. Heating the ore to remove volatile impurities (calcination of…
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