Concept:Acid rain forms when pollutants like sulfur dioxide and nitrogen oxides mix with water vapor, producing strong acids.
Explanation:Burning fossil fuels releases sulfur dioxide (SOâ‚‚) and nitrogen oxides (NOâ‚“) into the air.
These gases rise and react with water, oxygen, and sunlight.
The reaction creates sulfuric acid (H₂SO₄) and nitric acid (HNO₃).
Normal rainwater is slightly acidic (pH about 5.6) due to dissolved carbon dioxide.
But acid rain has a much lower pH (4.2–4.4) because of these strong acids.
Among the given options, sulfuric acid is the main acid formed in this process.
Hydrochloric, boric, and acetic acids are not produced by the typical pollutants causing acid rain.
Answer:D. Sulphuric acid