The newest 14 of 13 written questions. Open one to see it on the real paper.
State why sulfur dioxide is produced when some fossil fuels are burned.
See it on the paper →Name the two gases which are present in clean dry air in the highest percentages.
See it on the paper →Nuclear power stations are very expensive to build. Apart from cost, state one advantage and one disadvantage of generating electricity using wind compared to nuclear. advantage disadvantage
See it on the paper →State one source of sulfur dioxide.
See it on the paper →Name one other oxide that is a pollutant in the air.
See it on the paper →Circle the energy source in the list that produces carbon dioxide when it is used to generate electricity in a power station.
See it on the paper →State the percentage of oxygen gas and nitrogen gas in clean air. oxygen = % nitrogen = %
See it on the paper →Small quantities of carbon dioxide are found in the air. State one source of the carbon dioxide found in the air.
See it on the paper →Comprehensive responses • Many candidates named both the gases which are present in clean dry air in the highest percentages. Limited responses • Some candidates were able to name one of the gases.
— Examiner report, February/March 2026, 0654/32 Q8(b)(i) (Cambridge)
There were many possible answers. Most responses were too vague, for example, factories, industry and cars.
— Examiner report, February/March 2024, 0654/32 Q5(c)(i) (Cambridge)
Many candidates were able to name another oxide that is a pollutant in the air.
— Examiner report, February/March 2024, 0654/32 Q5(c)(ii) (Cambridge)
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Sulfur dioxide is a pollutant gas that dissolves in rainwater to form acid rain. State one source of sulfur dioxide in the air.
See it on the paper →Nitrogen dioxide is an air pollutant. Describe one human activity that releases nitrogen dioxide into the air.
See it on the paper →Identify one other gaseous air pollutant that is harmful to humans.
See it on the paper →Which pie chart represents the composition of clean air?
See it on the paper →State two harmful gaseous oxides that are present in polluted air.
See it on the paper →Which processes lead to the formation of a greenhouse gas?
See it on the paper →