ATTEMPT · ENVIRONMENT · PRELIMS 2013
Acid rain is caused by the pollution of the environment by -
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Acid rain is caused by the pollution of the environment by -
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• Correct Answer: D
• Acid rain is caused by SO₂ and NOx (including N₂O) reacting with atmospheric water and oxygen to form sulfuric acid (H₂SO₄) and nitric acid (HNO₃).
• A, B, and C are wrong: CO₂ forms only weak carbonic acid; CO and O₃ are not acid rain precursors.
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