Question

Which of the following term is not related to Al extraction?

• A. Serpek's process.
• B. Hall-Heroult process.
• C. Thermite process.
• D. Hoop's process.

Answer 1

The correct option is C Thermite process.

Hoop process: A molten alloy of copper, crude aluminium and silicon is used as the anode. It forms the lowermost layer in the cell.

Hall-Heroult process:is the major industrial process of smelting aluminium.

Serperk process:The powdered bauxite is mixed with carbon and heated up to 1800^oC and a current of nitrogen is passed, aluminum nitride is obtained. Silica is converted in to silicon (Si).

Aluminium is used as a reducing agent in thermite process.