IGNOU BEVAE 181 2025 - Acid Rain

Question

Acid Rain

14 Feb 2025

Answer :

Word Count : 306

Acid rain refers to precipitation that has been made acidic due to atmospheric pollution, primarily from sulfur dioxide (SO₂) and nitrogen oxides (NOₓ) released by industrial activities, vehicle emissions, and fossil fuel combustion. When these pollutants mix with water vapor in the atmosphere, they undergo chemical reactions to form sulfuric acid (H₂SO₄) and nitric acid (HNO₃), which then fall to the Earth as rain, snow, fog, or even dust.

The pH of normal rainwater is slightly acidic, around 5.6, due to the natural presence of carbonic acid formed

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