Home Environment & Ecology MCQs

Question

Which of the following pollutants is a major contributor to acid rain?

  1. Ozone (O3)
  2. Carbon Monoxide (CO)
  3. Sulphur Dioxide (SO2)
  4. Particulate Matter (PM10)

Answer:

Option C: Sulphur Dioxide (SO2)

Detailed Solution:

The correct answer is “Sulphur Dioxide (SO2)”.

Sulphur Dioxide (SO2) is a major contributor to acid rain. It reacts with water, oxygen, and other chemicals in the atmosphere to form sulfuric acid, which then falls as acid rain.