MCQ
Which of the following is a secondary pollutant:
- ✓$PAN.$
- BParticulate matter.
- CHydrocarbons.
- DChloroflurocarbons.
✓
Answer
Correct option: A.
$PAN.$
Peroxyacytyl nitrate is a part of smog that causes air pollution. It is a secondary pollutant because they are formed in the atmosphere after the emission of primary pollutants. $PAN$ is formed when oxidized volatile organi compounds combine with nitrogen oxide.
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