A-LevelChemistryNitrogen and sulfurOct/Nov 2022Paper 1 Q241 Mark
Photochemical smog is a type of air pollution produced in urban areas by the effect of sunlight on substances released from vehicle exhausts. Which mixture of primary pollutants leads to the formation of photochemical smog?
Acarbon dioxide and water vapour
Bcarbon monoxide and unburnt hydrocarbons
Cnitrogen oxide and unburnt hydrocarbons
Dsulfur dioxide and water vapour
✓ Correct Answer
The correct answer is C. This question tests the candidate's understanding of nitrogen and sulfur within the Chemistrysyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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