Copper and aluminium metals are used in the making of electric wires, as they have very low electrical resistance and good electric conductivity.
Iron, copper and aluminium metals are used in the making of house-hold utensils and factory equipment.
Iron is used as a catalyst in the preparation of ammonia gas by Haber’s process.
Zinc is used for galvanizing iron to protect it from rusting.
Chromium and nickel metals are used for electroplating and in the manufacture of stainless steel.
The aluminium foils are used in packaging medicines, cigarettes and food materials.
Silver and gold are used to make jewellery, coins. The thin foils made of silver and gold are used to decorate sweets.
The mercury is used in the making of thermometers.
Sodium, titanium and zirconium are used in atomic energy that is nuclear energy and space science projects.
Zirconium is used in making bullet-proof alloy steels.
Lead is used in making car batteries.
USES OF NON-METALS
Hydrogen is used in the hydrogenation of vegetable oils to make vegetable ghee 2. Hydrogen is used in the manufacture of ammonia, whose compounds are used as fertilisers.
Liquid hydrogen is used as a rocket fuel.
Carbon in the form of graphite is used for making the electrodes of electrolytic cells and dry cells.
Nitrogen is used in the manufacture of ammonia, nitric acid and fertilisers.
Nitrogen is used to preserve food materials.
Compounds of nitrogen like Tri Nitro Toluene (TNT) and nitroglycerine are used as explosives.
Sulphur is used for manufacturing sulphuric acid.
Sulphur is used as a fungicide and in making gun powder.
