Question

Bauxite is extracted by :

• A. Hall's process
• B. Baeyer's process
• C. Serpek's process
• D. All of the above

Answer 1

The correct option is D All of the above

Since it is difficult to purify aluminium, bauxite ore is purified either by Baeyer's process (or Hall's process) or Serpek's process depending upon the impurity present in the ore. Hence option D is the correct answer.