Multiple choice

Which of the following compounds are responsible for acid rain?

  1. nitrogen dioxide and silicon dioxide

  2. nitrogen dioxide and sulphur dioxide

  3. nitrogen dioxide and carbon monoxide

  4. silicon dioxide and carbon monoxide
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acid rain is primarily caused by nitrogen dioxide (NO2) and sulphur dioxide (SO2) emitted from fossil fuel combustion and industrial processes. These gases react with atmospheric water to form nitric and sulphuric acids.

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