Uses of Air


 
 
Concept Explanation
 

Uses of Air

Air :

Air is the mixture of gases, mainly containing nitrogen and oxygen. Without air life is not possible on Earth.

Uses of Air:

Besides breathing, air is useful to us in many other ways:

  • 1. The wind makes wind mills rotate. The windmills are used to draw water from the tube wells and run flour mills.It is now being used to generate electricity.
  • 2. Aeroplane, helicopters, balloons, parachutes and yachts work because of air.
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    Sample Questions
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    Question : 1

    In which of the following air is used ?

    Right Option : D
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    Question : 2

    With which of the following gases, substance combine during combustion to produce new substance along with energy?

    Right Option : A
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    Question : 3

    Which of the following is correct :

    (a) Air is required for respiration.

    (b) Air helps in the dispersal of seeds.

    Right Option : C
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