Question

The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?

• A. Co
• B. Hydrocarbon
• C. Peroxyacetyl nitrate
• D. NO

Answer 1

Answer: (C)

Peroxyacetyl nitrate

Answer 2

: Peroxyacetyl nitrate (PAN) formed from the primary pollutants $NO_{2},O_{3}$and hydrocarbons is the secondary pollutant.