Uses of iron:
1. Iron is specifically used to prepare magnets.
2. Alloy of iron, stainless steel does not rust; therefore, it is widely used for making utensils for cooking.
Uses of copper:
1. Copper is used for making electrical wires.
2. Alloy of copper, brass is resistant to corrosion and has a golden colour; therefore, it is used for making decorative items, statues, etc.
Uses of aluminium:
1. Aluminium is widely used for making tins, cans, foils, utensils, etc.
2. Alloy of aluminium, duralumin is used to make bodies of aircrafts because of its light weight, strength and resistance to corrosion.