A-LevelChemistryNitrogen and sulfur9701/12 · Feb/Mar 2025 · Q221 Mark

Four atmospheric pollutants are listed. 1 nitrogen oxides 2 carbon monoxide 3 unburnt hydrocarbons 4 sulfur dioxide Which pair of pollutants react to form peroxyacetyl nitrate, PAN?

A1 and 3

B1 and 4

C2 and 3

D2 and 4

✓ Correct answer

A: 1 and 3

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Topic: Nitrogen and sulfur, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source: A-Level Chemistry, Feb/Mar 2025 Paper 1 Variant 2, question 22.

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