Which importan t properties of aluminium are responsible for its great demand in industy?

Explanation

(i) Aluminium is a very good conductor of electricity.
(ii) Aluminium is not affected by air at room temperature.
(iii) Alunimum is not attached by water.
(iv) Aluminiu is a powerful reducing agent.
All these prperties of the metal are responsible for tis great deman d in industyr. it is used:
(i) in transmission cables for carrying electric current and also for windin g coils, motors and dynamous etc.
(ii) as a reducing agent in the form of aluminium powder. this is known as thermit welding.
(iii) for wrapping food preparatins, cigraettes, phthograps films etc. as it is not affected by air an d moisture. Aluminium foils are used for this purpose.