0654.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 0654.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 11 of 11 written questions. Open one to see it on the real paper.
- 0973/41 · October/November 2024 · Q2d(i)[1]
State the source of sulfur dioxide in the air.
See it on the paper → - 0973/32 · May/June 2024 · Q2a(iii)[1]
is 78% of clean air.
See it on the paper → - 0973/42 · May/June 2024 · Q12a(ii)[2]
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 → - 0973/31 · October/November 2023 · Q2a(i)[1]
State which sample, A or B, represents clean air. Explain your answer. sample explanation
See it on the paper → - 0973/32 · May/June 2023 · Q5a[2]
State the percentage of oxygen gas and nitrogen gas in clean air. oxygen = % nitrogen = %
See it on the paper → - 0973/31 · May/June 2022 · Q8a(ii)[1]
State the name of the gas from Table 8.1 that is a product of the incomplete combustion of carbon-containing substances.
See it on the paper → - 0973/42 · May/June 2022 · Q2a[2]
State the percentage of nitrogen gas and oxygen gas in clean air. nitrogen gas = % oxygen gas = %
See it on the paper → - 0973/31 · May/June 2020 · Q2d(ii)[1]
Nitrogen dioxide is an air pollutant. Describe one human activity that releases nitrogen dioxide into the air.
See it on the paper → - 0973/31 · May/June 2020 · Q2d(iii)[1]
Identify one other gaseous air pollutant that is harmful to humans.
See it on the paper → - 0973/42 · May/June 2019 · Q2a(i)[2]
Complete the labels in Fig. 2.1 to show the main constituent of clean air and of natural gas.
See it on the paper → - 0973/42 · May/June 2019 · Q2a(ii)[2]
One of the other gases in natural gas is ethane. Name two gases in clean air that are formed by the complete combustion of ethane.
See it on the paper →
What examiners said
Many candidates correctly identified carbon monoxide. Some suggested methane.
— Examiner report, May/June 2022, 0973/31 Q8(a)(ii) (Cambridge)
The correct answer of nitrogen as the major component of air was the most commonly seen. Few candidates identified methane as the major component of natural gas. The most common incorrect answer being nitrogen or hydrogen.
— Examiner report, May/June 2019, 0973/42 Q2(a)(i) (Cambridge)
Few candidates were awarded all the available credit. The correct answer of carbon dioxide was commonly seen. Fewer candidates gave water and common incorrect answers included nitrogen and hydrogen.
— Examiner report, May/June 2019, 0973/42 Q2(a)(ii) (Cambridge)
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