Bauxite is concentrated by

Options

(a) magnetic separation
(b) roasting
(c) froth floatation process
(d) chemical method

Correct Answer:

chemical method

Explanation:

Bauxite (Al₂O₃.2H₂O) is concentrated by chemical method. In this method bauxite is well digested with concentration sodium hydroxide which dissolves all the Al₂O₃ component in the ore to form a solution of sodium aluminate leaving behind the impurities.