Which gas is mainly responsible for the formation of acid rain?

Answer and explanation

Correct answer: D. Sulphur dioxide

  1. Step 1: Sulphur dioxide dissolves in rainwater to form sulphurous and sulphuric acid. Answer: Sulphur dioxide. Why not the others: Argon: Argon is a noble gas and does not form acids. Nitrogen: Nitrogen gas is unreactive at normal temperatures. Hydrogen: Hydrogen is not an acidic oxide-forming pollutant.

Practise more Electrolysis, organic chemistry and environmental chemistry.

Free questions with an explanation for every one, and full timed Kenya KCSE mock tests.