Draw a neat labelled diagram.

Hydraulic separation method.

Draw a neat labelled diagram.

Froth floatation method.

Draw a neat labelled diagram.

Electrolytic reduction of alumina.

Write the chemical equation for the following events.

a. Aluminum came in contact with air.

b. Iron filings are dropped in an aqueous solution of copper sulfate.

c. A reaction was brought about between ferric oxide and aluminum.

d. Electrolysis of alumina is done.

e. Zinc oxide is dissolved in dilute hydrochloric acid.

Complete the following statement using every given option.

During the extraction of aluminum…………..

a. Ingredients and gangue in bauxite.

b. Use of leaching during the concentration of ore.

c. The chemical reaction of the transformation of bauxite into alumina by Hall’s process.

d. Heating the aluminum ore with concentrated caustic soda.