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प्रश्न
With an example, state what are secondary pollutants?
टीपा लिहा
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उत्तर
The pollutants that are formed in the atmosphere by chemical interactions between primary pollutants and atmospheric constituents are known as secondary pollutants. Examples of secondary pollutants are Sulphur trioxide, Ozone, Peroxyacetyl Nitrate (PAN), Ketones, etc.
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