Write any two examples of secondary air pollutants
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Ozone and NO2 is the example of secondary air pollutants.
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examples of a secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxide (NOx)combine in the presence of sunlight ; and NO2 , which is formed as NO combines with oxygen in the air ; and acid rain , which is formed when Sulphur dioxide or nitrogen oxide react with water .
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