Question

State five uses of metals.

Answer 1

1. Copper and aluminium are utilised to manufacture wires for conducting electric current. Copper and aluminium possess minimal electrical resistance, making them excellent conductors of electricity.
2. Iron, copper and aluminium metals are used to make household utensils and factory equipment.
3. Iron is used as a catalyst in the preparation of ammonia gas by Haber’s process.
4. Zinc is used for galvanising iron to protect it from rusting.
5. Chromium and nickel metals are used for electroplating and in the manufacture of stainless steel.
6. Aluminium foil is used in the packaging of medicines, cigarettes, and food products.
7. Silver and gold metals are used to make jewellery. The thin foils made of silver and gold are used to decorate sweets.
8. The liquid metal mercury is used in making thermometers.
9. Sodium, titanium and zirconium metals are used in atomic energy (nuclear energy) and space science projects.
10. Zirconium metal is used in making bulletproof alloy steels.
11. Lead metal is used in making car batteries.