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Sources of Pollution — Geography STD 9 — Question

ICSE BoardEnglish MediumSTD 9GeographySources of Pollution2 Marks
Question
What are primary pollutants?
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Answer

The pollutants that are directly emitted from the sources and are found in the atmosphere in the form in which they are emitted are known as primary pollutants, e.g., ash, radioactive compounds, oxides of sulphur and nitrogen etc.

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