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Unilorin Post-UTME Biology 2022 (Model questions) Question 5

Question 5

Pollution

Which of the following air pollutant causes acid rain?

  1. A.Sulphur dioxide
  2. B.lead oxide
  3. C.carbon dioxide
  4. D.hydrogen sulphide
Show the answer and explanation

Answer: A (Sulphur dioxide)

Explanation

Sulphur dioxide dissolves in rain water to form sulphurous and sulphuric acid, the main cause of acid rain.