Draw a neat labelled diagram.

Electrolytic reduction of alumina.

Draw a neat labelled diagram.

Magnetic separation method.

Draw a neat labelled diagram.

Froth floatation method.

Draw a neat labelled diagram.

Hydraulic separation method.

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.