Q.

What are the main types of air pollutants?

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a

Point source and nonpoint source

b

Primary and secondary pollutants

c

Natural or anthropogenic pollutants

d

Natural or anthropogenic pollutants

answer is B.

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Detailed Solution

  • Primary air pollutants are those that are created and released from specific sources.
  • Particulates, carbon monoxide, nitrogen oxide, and sulphur oxides are some examples of primary pollutants.
  • Secondary air pollutants are formed by the chemical interactions in the lower atmosphere. Eg. Ozone and aerosols.
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