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JAMB Biology 1984 Question 43

Question 43

Pollution

Which of the following is NOT regarded as a pollutant on land or in the air?

  1. A.Smoke
  2. B.Noise
  3. C.Sulphur dioxide
  4. D.Carbon monoxide
  5. E.Nitrogen.
Show the answer and explanation

Answer: E (Nitrogen.)

Explanation

Nitrogen gas makes up about 78% of normal air and is harmless. Smoke, noise, sulphur dioxide and carbon monoxide are pollutants.