Prevention of Air Pollution


 
 
Concept Explanation
 

Prevention of Air Pollution

We all know that we need a healthy and clean air for breathing. The task of cleaning up air and improving its quality are not very difficult. For this we have to take some steps and use devices that are necessary and observe some restraints. Some such steps are as follows:

Household

  • Improved smokeless chulhas and efficient stoves should be used to burn fuels like wood, coal, kerosene in our villages and cities.
  • We should shift to smokeless energy sources like LPG, biogas, solar energy and electrical energy.
  • We should not burn paper, dry leaves, plastic bags and garbage.
  • We should reduce the use of aerosols and sprays such as perfumes, deodorant sprays, cosmetics and other similar sprays in homes because their solid or liquid particles remain suspended in the air for long.
  • Smoking should be avoided.
  • In Indian villages, firewood is burned in an open chulha to cook food. The smoke from chulhas affects the health of the women in the villages. A smokeless chulha has therefore been developed by the government and popularized in the villages.

    Automobiles

  • Use of efficient internal combustion engines for complete combustion of fuels.
  • As far as possible lead free fuel such as Compressed Natural Gas (CNG); should be used for running cars, buses, trucks, etc.
  • Catalytic converter is fitted in the exhaust pipes of the petrol driven vehicles. This converter converts the harmful exhaust gases-carbon monoxide (CO) and nitrogen dioxide (NO_2) into harmless carbon dioxide (CO_2), nitrogen and water.
  • The vehicles should be subjected to air pollution check regularly and strictly.
  • A CNG filling station
  • Power Generation  There is a need for using the less polluting forms of power generation like solar energy, wind energy, tidal and geothermal energy and other forms of renewable energy.

    Industries

  • Tall chimneys fitted with filters should be installed in factories, so that the air is not polluted much near the surface of the Earth.
  • Mills and factories should not be run in the main city where there are lot of people but should be in secluded areas. Government is taking action against industrial units by not giving licenses to operate in thickly populated areas
  • Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which of the following are correct ?

    (a) In Indian villages, firewood is burned in an open chulha to cook food. The smoke from chulhas affects the health of the women in the villages.

    (b) Household we should reduce the use of aerosols and sprays such as perfumes, deodorant sprays, cosmetics and other similar sprays in homes because their solid or liquid particles remain suspended in the air for long.

    (c) Automobiles as far as possible lead free fuel such as Liquid Natural Gas (LNG); should be used for running cars, buses, trucks, etc.

    Right Option : A
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    Explanation
    Question : 2

    Which of the following are correct ?

    (a) In household we should shift to smokeless energy sources like LPG, biogas, solar energy and electrical energy.

    (b) Smoking should be avoided.

    (c) There is a need for using the less polluting forms of power generation like solar energy, wind energy, tidal and geothermal energy and other forms of renewable energy.

    Right Option : D
    View Explanation
    Explanation
    Question : 3

    As far as possible lead free fuel such as __________________ should be used for running cars, buses, trucks, etc.

    Right Option : A
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    Explanation
     
     


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