A) carbon dioxide is added to precipitate the alumina
B) temperature and pressure are dropped and the super saturated solution seeded
C) both and are practiced
D) the water is evaporated
Correct Answer: B
Solution :
Industrially, in the extraction of alumina, temperature and pressure are dropped and the super saturated solution seeded. Sometimes \[\text{C}{{\text{O}}_{\text{2}}}\] is also used to precipitate alumina.You need to login to perform this action.
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