Start learning →

Ground-level ozone forms mainly when NOx and VOCs react with:

ADense winter fog
BPresence of sunlight
CHeavy rainfall drops
DHigh air humidity
Answer & Solution
Correct answer: B. Presence of sunlight
Sunlight drives the photochemical reaction between nitrogen oxides and volatile organic compounds to generate ozone.
Practise this question with Quill — ICSE Class 9 →

Keep practising Atmospheric Pollution

Browse all Atmospheric Pollution questions for ICSE Class 9, or explore more Chemistry topics.

Start a Atmospheric Pollution lesson →