Which of the following benefaction processes is used for the mineral, Al2O3.2H2O?

2 3 2 Al O .2H O is purified by Bayer’s process. It is also known as leaching. In leaching, the solute is detached or extracted from its carrier by a way of solvent. Here, the ore is treated with chemical reagents to form soluble salt and the impurity remains undissolved. Therefore, the correct answer is option (b) leaching.