Which two chemical precursors primarily cause acid rain? By Kalsoom Tahir β Fact Checked π Difficulty Medium π Last Updated 13 Aug 2026 A. COβ and CHβ B. CFCs and HFCs C. Sulfur Dioxide and Nitrogen Oxides D. CO and Ozone Check Answer π‘ Explanation: Acid rain forms when Sulfur Dioxide (SO2) and Nitrogen Oxides (NOx) react with atmospheric water to create sulfuric and nitric acids. π Topics: Environment and Conservation Environmental Issues π― Exams: CSS GEN NTS PMS