Q41 / 180 · NEET 2018 · Botany

Which of the following is a secondary pollutant?

  • A
    SO2
  • B
    CO2
  • C
    CO
  • Correct answer
    D
    O3

Solution

O3 is a secondary pollutant. It is called a "secondary" pollutant because it is produced when two primary pollutants react in sunlight and stagnant air. These two primary pollutants are nitrogen oxides (NOx) and volatile organic compounds (VOCs)

Hence, the correct answer is option: 'D'.

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