Question

The ore of aluminium is ______.

विकल्प

• Al₂O₃

• Al₂O₃2H₂O

• Na₃AlF₆

• Al₂O₃H₂O

Answer 1

The ore of aluminium is Al₂O₃2H₂O.

Explanation:

Bayer’s method is a chemical leaching process explicitly used to concentrate and purify bauxite ore, whose chemical formula is represented as Al₂O₃.2H₂O. In this process, the raw bauxite ore is treated with a hot, concentrated sodium hydroxide solution to dissolve the aluminium component and separate it from impurities like iron oxides. The ultimate goal of this treatment is to convert the raw hydrated ore into pure, anhydrous alumina (Al₂O₃).