Paper 1 · People, Development & Environment
UGC NET 2019 JUN Political Science
Which of the following is considered a secondary air pollutant?
Aनाइट्रिक ऑक्साइड
Bओजोन ✓ Correct
Cसल्फर डाइऑक्साइड
Dकार्बन मोनोऑक्साइड
Answer: B
Explanation
★Tropospheric ozone is a secondary pollutant because it forms from reactions of primary pollutants in sunlight. Hence option B.
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