Secondary air pollutant is:
A) Ozone
B) Carbon monoxide
C) Nitrogen Dioxide
D) Sulphur dioxide
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Ozone is the secondary pollutant so option A is the answer
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a) ozone
secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight; NO2, which is formed as NO combines with oxygen in the air; and acid rain,
which is formed when sulfur dioxide or nitrogen oxides react with water.
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