Which one of the following is the main reason of acid rains ?
- A. Dissolution of sulphur and nitrogen oxides in rain ✓
- B. Dissolution of minerals in rain
- C. Dissolution of dust particles in rain
- D. Dissolution of soil solution in rain
Correct Answer: A. Dissolution of sulphur and nitrogen oxides in rain
Explanation
Acid rain is primarily caused by the emission of sulfur dioxide (SO_2) and nitrogen oxides (NO_x), which react with atmospheric moisture to form sulfuric and nitric acids.
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