Multiple choice

Which of the following pollutants contribute in the formation of smog?

a. Sulphur dioxide b. Nitrogen oxide c. Carbon monoxide d. Carbon dioxide

  1. a and c

  2. a and b

  3. b and c

  4. b and d
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphur dioxide and nitrogen oxide contribute in the formation of smog.

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