Peroxyacetyl nitrate (PAN), a pollutant is found in the_________________?
Correct answer: A. Automobile exhaust
- A. Automobile exhaust
- B. Flue gas of coal based power plant
- C. Exhaust of nitric acid plant
- D. Exhaust of sulphuric acid plant
Explanation
PAN is a secondary photochemical pollutant associated with automobile exhaust because vehicle hydrocarbons and nitrogen oxides form PAN in sunlight. It is therefore a component of photochemical smog rather than a normal product of coal, nitric-acid, or sulphuric-acid plant exhaust.
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