0653.C10.2.02 — State the source of each of these air pollutants, limited to: (a) . carbon dioxide from the complete combustion of carbon-containing fuels (: past paper questions
Real questions on 0653.c10.2.02 — state the source of each of these air pollutants, limited to: (a) . carbon dioxide from the complete combustion of carbon-containing fuels (
The newest 5 of 5 written questions. Open one to see it on the real paper.
- 0653/31 · May/June 2025 · Q6d[1]
During the combustion of coal, a compound that contains sulfur is made. Name this compound. (d) Coal is a fossil fuel.
See it on the paper → - 0653/32 · May/June 2025 · Q4e(ii)[1]
Oxides of nitrogen are air pollutants. State one source of these oxides of nitrogen.
See it on the paper → - 0653/32 · October/November 2024 · Q5b(i)[1]
State the name of pollutant A.
See it on the paper → - 0653/32 · October/November 2024 · Q5b(ii)[1]
Pollutant B is carbon monoxide. State one effect of carbon monoxide on human health.
See it on the paper → - 0653/32 · February/March 2024 · Q5a[3]
Fig. 5.1 is a pie chart showing the composition of clean air. Fig. 5.1 Identify the gases in clean air by completing the key for the pie chart shown in Fig. 5.1. Key and and
See it on the paper →
What examiners said
There were few candidates who wrote the correct answer, sulfur dioxide. The most common incorrect answer was sulfuric acid.
— Examiner report, May/June 2025, 0653/31 Q6(d) (Cambridge)
The source of oxides of nitrogen, car engines, was known by only a small number of candidates. The high temperature and pressure inside the internal combustion chamber of the car engine causes oxygen and nitrogen from the air to combine. The oxides of nitrogen are then emitted through the car’s exhaust.
— Examiner report, May/June 2025, 0653/32 Q4(e)(ii) (Cambridge)
Most candidates identified nitrogen and oxygen correctly. Fewer candidates gained credit for the white area in the pie chart, with carbon dioxide and water vapour being the least chosen responses.
— Examiner report, February/March 2024, 0653/32 Q5(a) (Cambridge)
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