Multiple choice

Which of the following gases may cause acid rain in industrial areas?

  1. CO2

  2. CO

  3. SO2

  4. CH4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Sulfur dioxide (SO2) reacts with water vapor and oxygen in the atmosphere to form sulfuric acid, which is a primary contributor to acid rain. Industrial processes are a major source of SO2 emissions.

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