Pollution Caused by Burning of Coal


 
 
Concept Explanation
 

Pollution Caused by Burning of Coal

Pollution caused by the burning of fossil fuel (coal):

The burning or combustion of coal produces carbon dioxide, carbon monoxide, sulphur dioxide, oxides of nitrogen and smoke.

  • When coal burns in a sufficient supply of oxygen, carbon dioxide is produced. It is a harmless and nontoxic gas. Carbon dioxide in air keeps the earth warm by trapping radiation. This is called the greenhouse effect. However, large concentration of carbon dioxide in the atmosphere increases the greenhouse effect, leading to unnatural global warming.
  • When coal burns in an insufficient supply of oxygen, it burns incompletely and forms carbon monoxide, which is poisonous. When inhaled, carbon monoxide combines with the heamoglobin of our blood and forms carboxyhaemoglobin. This causes suffocation and even death.
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    Sample Questions
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    Question : 1

    The primary greenhouse gas produced from burning fossil fuels(coal, oil and natural gas). is ______________.

    Right Option : A
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    Question : 2

    How does carbon monoxide, a poisonous gas, emitted by automobiles, prevent transport of oxygen into the body tissues?

    Right Option : D
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    Question : 3

    Which of the following harmful gases produced after burning of coal ?

    Right Option : D
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