A-LevelChemistryNitrogen and sulfurOct/Nov 2021Paper 1 Q181 Mark
Oxides of nitrogen are present in the environment due to natural and man-made sources. Which row is correct?
Aelectrical discharges in the atmosphere (natural), internal combustion engines (man-made)
Belectrical discharges in the atmosphere (natural), as a by-product of the Haber process (man-made)
Cdecomposition of dead plants in rivers (natural), internal combustion engines (man-made)
Ddecomposition of dead plants in rivers (natural), as a by-product of the Haber process (man-made)
✓ Correct Answer
The correct answer is A. 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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