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30 November, 00:32

Harmful chemicals released directly into the atmosphere due to either human activities or natural processes are ___ air pollutants.

a) primary

b) secondary

c) tertiary

d) quaternary

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Answers (1)
  1. 30 November, 04:26
    0
    correct answer is a) primary air pollutants

    Explanation:

    solution

    primary air pollutants material are that material which release pose health risk in the unmodified form and they emitted directly from identifiable source not react so they are primary air pollutant

    and some major material released directly into the atmosphere as unmodified are given below

    Carbon monoxide Nitrogen oxides Sulfur dioxide Particulate matter Hydrocarbons

    they all are primary air pollutants

    so correct answer is is a) primary air pollutants
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