Air Pollution


 
 
Concept Explanation
 

Air Pollution

We know very well that we can live for some time without food, but we cannot live even for a few seconds without air. So, air is the first thing that we need to live.

  • On the other hand, we all are aware that our environment is not what it used to be. Its quality and purity is falling day by day. We feel uncomfortable when you sit in a place where there is a lot of smoke.
  • Sometimes even tears may come out of your eyes. While on hilly areas and sea shores the air is comparatively pure and fresh. Also, there is a difference in quality of air villages and cities; this is due to the fact that the air in mountains and villages is usually free from pollutants like smoke. The number of vehicles, industries and people is less in these areas.
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    Sample Questions
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    Question : 1

    On burning charcoal which of the following gases is produced ?

    Right Option : C
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    Question : 2

    The gases which are causing air pollution are _____________.

    Right Option : C
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    Explanation
    Question : 3

    Air pollution are harmful to living things. Which of the following is/are their harmful effect (s)?

    1. They form acid rain.
    2. They cause breathing problems in humans.
    3. They interfere with photosynthesis in plants.
    4. They result in the depletion of ozone layer.

     

    Right Option : D
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