The pH of normal rainwater is slightly acidic, around: MCQ with Answer and Explanation

The pH of normal rainwater is slightly acidic, around:
A. 8.0
B. 4.5
C. 5.6
D. 7.0
Answer: Option C
Solution (By JKSSB Mock Tests)
Normal rainwater is slightly acidic with a pH of about 5.6. This is due to the natural dissolution of carbon dioxide from the air into the rain droplets, forming weak carbonic acid (CO₂ + H₂O ⇌ H₂CO₃). Acid rain has a pH lower than 5.6 due to pollutants.

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