A-LevelChemistryNitrogen and sulfurMay/June 2023Paper 1 Q241 Mark
The equation shows a reaction that occurs between carbon monoxide and nitrogen monoxide in a catalytic converter. 2CO(g) + 2NO(g) → 2CO₂(g) + N₂(g) Which statement is correct?
AThe catalyst used is finely divided iron.
BThe reaction prevents greenhouse gas emissions into the atmosphere.
CThe reaction reduces the possibility of the formation of photochemical smog.
DThe reaction results in increased ozone depletion.
✓ 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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