Sulphur dioxide (SO₂) is a corrosive gas that combines with moisture in the atmosphere to form sulfurous acid and sulfuric acid, which cause acid rain.This acid rain corrodes iron and steel structures, weakening and damaging them over time.
Iron and steel structures are damaged by which gas?
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This question is part of 🔬 General Science within the broader 🌐 Current Affairs & GK subject and appears in the PPSC Punjab Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.