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Environmental Issues — BIOLOGY STD 12 Science — Question

Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
Which of the following is a secondary pollutant?
  • A
    $\mathrm{SO}_2$
  • B
    $\mathrm{CO}_2$
  • C
    CO
  • ✓
    $\mathrm{O}_3$
✓

Answer

Correct option: D.
$\mathrm{O}_3$
D

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