Multiple choice

Which one of the following is produced during the formation of photochemical smog?

  1. Hydrocarbons

  2. Nitrogen Oxides

  3. Ozone

  4. Methane

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Photochemical smog forms when nitrogen oxides and volatile organic compounds react in sunlight, producing ozone as a secondary pollutant. This ground-level ozone is a key component of photochemical smog.