(a) Iron :
It is used to make pipes, tanks, railing, etc.
It is used in the construction of power transmission towers.
(b) Aluminium :
It is used to make electric wires.
It is used to make utensils, cans, window frames, etc.
(c) Gold :
It is used for making ornaments and coins.
It is used in the manufacture of electronic devices like computers, telephones, home appliances, etc.
(d) Oxygen :
It is used by all living beings for breathing.
It is important for combustion.
(e) Iodine :
It is used in photographic films in the form of potassium iodide.
It is added to salt to make it iodized salt which is necessary for the growth of the human body.
