The source of acid rain_________.
Correct answer: B. Nitric oxide
- A. Nitrous oxide
- B. Nitric oxide
- C. CFCS
- D. CO2
Explanation
Nitric oxide is released during combustion and can be oxidised into nitrogen dioxide, which forms nitric acid in atmospheric moisture. Nitrous oxide and carbon dioxide are not the usual primary causes of acid rain, although sulfur oxides are also major contributors and are missing from the options.
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