Q. Which of the following is a secondary air pollutant?

  • (A) Acid rain
  • (B) CO2
  • (C) SO2
  • (D) Dust particles
✅ Correct Answer: (A) Acid rain

Published by Monu Rathod ⭐ 7.03K Points at 15-Oct-2021 06:54 pm in Science

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