Which of the following pollutants is produced by the burning of fuels like coal?
(a) sulphur dioxide
(b) carbon monoxide
(c) soot
(d) all the above

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Solution

(d) all of the above

When coal is burnt in inadequate supply of oxygen, carbon monoxide gas, which is highly toxic in nature, is produced. Sulphur impurities in coal lead to a release of sulphur dioxide during the burning of coal. Burning of coal also produces soot. When we heat a substance in a container over coal, it's bottom is blackened due to the release of soot from coal.

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