CBSE  /  Class 6  /  Science  /  Air Around Us

  • 1. 
    Major part of the air is constituted by

  • nitrogen
  • oxygen
  • carbon dioxide
  • inert gases

  • 2. 
    Which of the following gas helps in burning? ,

  • Nitrogen
  • Oxygen
  • Carbon dioxide
  • Carbon monoxide

  • 3. 
    Which of the following gas we use in breathing?

  • Carbon dioxide
  • Nitrogen
  • Oxygen
  • None of these

  • 4. 
    Wind is

  • air around us
  • rising hot air
  • air in motion
  • none of these

  • 5. 
    Air is present in

  • atmosphere
  • soil
  • water of ponds, lakes and seas
  • everywhere

  • 6. 
    Air is

  • a mixture
  • a pure substance
  • an element
  • anything, that depends on the place where it is found

  • 7. 
    Envelope of air that surrounds the earth is known as

  • biosphere
  • atmosphere
  • environment
  • ecosystem

  • 8. 
    Which is not a property of air?

  • It occupies space. (b) It is transparent,

  • 9. 
    The ratio of nitrogen to oxygen in the air is

  • 1:4
  • 4:1
  • 3:1
  • 1:2

  • 10. 
    The main constituent of the air is.

  • nitrogen
  • oxygen
  • carbon dioxide
  • hydrogen
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