The Al2 O3 content of cryolite in Hall-Heroult’s cell is maintained between __________ percent.

Question: The Al2 O3 content of cryolite in Hall-Heroult’s cell is maintained between __________ percent.
[A].

2-5

[B].

18-20

[C].

12-15

[D].

6-12

Answer: Option A

Explanation:

No answer description available for this question.