Multiple choice general knowledge science & technology

This gas can cause acid rain

  1. carbonic acid

  2. sulphur dioxide

  3. helium

  4. argon
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphur dioxide (SO2) is the primary gas that causes acid rain when it reacts with water vapor in the atmosphere to form sulfuric acid. Carbonic acid is weak, helium and argon are noble gases and don't cause acid rain. The question wording could be more precise - SO2 contributes to acid rain formation rather than directly causing it.

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