Question:medium

Select the option(s) which is/are NOT considered as primary air pollutant(s).

Show Hint

Shortcut: Primary = directly emitted, Secondary = formed later. Remember PAN, ozone, and photochemical smog are classic secondary pollutants.
Updated On: Nov 25, 2025
  • Suspended particulate matter
  • Oxides of nitrogen
  • Volatile organic compounds
  • Peroxyacetyl Nitrate

Questions Asked in GATE AR exam