Fuels: past paper questions
Real questions on fuels
The newest 20 of 28 written questions. Open one to see it on the real paper.
- 0620/31 · May/June 2026 · Q1a(ii)[1]
is made by fermentation
See it on the paper → - 0620/31 · May/June 2026 · Q1b(ii)[2]
State which two substances are used as solvents. and
See it on the paper → - 0620/32 · February/March 2026 · Q2c(i)[2]
State two conditions needed for the fermentation of aqueous glucose.
See it on the paper → - 0620/42 · February/March 2026 · Q5f(ii)[2]
Complete the word equation for this reaction.
See it on the paper → - 0620/42 · February/March 2026 · Q5f(iii)[2]
Draw the displayed formula of the ester formed.
See it on the paper → - 0620/31 · May/June 2025 · Q4d(ii)[1]
State one use of ethanol.
See it on the paper → - 0620/41 · May/June 2025 · Q1c[1]
is manufactured by fermentation
See it on the paper → - 0620/42 · May/June 2025 · Q1e[1]
typical temperature for the fermentation of aqueous glucose in °C
See it on the paper → - 0620/43 · October/November 2024 · Q1a[1]
is manufactured by fermentation
See it on the paper → - 0620/33 · May/June 2024 · Q1a(v)[1]
a waste gas from digestion in animals
See it on the paper → - 0620/33 · May/June 2024 · Q8c(i)[2]
State two conditions for cracking.
See it on the paper → - 0620/33 · May/June 2024 · Q8c(ii)[1]
The diesel oil fraction from the fractional distillation of petroleum can be used for cracking. Give one other use of the diesel oil fraction.
See it on the paper → - 0620/32 · May/June 2023 · Q7d[1]
Ethanol can be manufactured by the reaction of ethene with steam. Name one other method of manufacturing ethanol.
See it on the paper → - 0620/32 · February/March 2023 · Q1f[1]
a product of photosynthesis. [Total: 6]
See it on the paper → - 0620/11 · October/November 2022 · Q12[1]
Which fuel is a gas at room temperature and makes two products when it burns in a plentiful supply of air?
See it on the paper → - 0620/32 · October/November 2022 · Q3c[1]
Name a gas that is used as a fuel.
See it on the paper → - 0620/32 · October/November 2022 · Q7c(iii)[1]
Ethene can be produced by cracking long-chain hydrocarbons to form short-chain hydrocarbons. Explain why long-chain hydrocarbons are cracked to form short-chain hydrocarbons.
See it on the paper → - 0620/33 · October/November 2022 · Q7b(ii)[2]
Ethanol can be manufactured by fermentation. Describe one other method of manufacturing ethanol.
See it on the paper → - 0620/32 · May/June 2022 · Q2d(iii)[1]
Give one use of ethanol. [Total: 10]
See it on the paper → - 0620/33 · May/June 2022 · Q1a(iii)[1]
an element that can be used as a fuel
See it on the paper →
What examiners said
Comprehensive responses • A few candidates recalled both the conditions for the fermentation of aqueous glucose, including the correct temperature needed. Limited responses • Some candidates knew one condition and then stated ‘catalyst’ for the second condition which was not in enough detail. • Many candidates confused this process with the process of making ethanol using steam, and used the cond...
— Examiner report, February/March 2026, 0620/32 Q2(c)(i) (Cambridge)
Comprehensive responses • Most candidates were able to name both products. Limited responses • Some candidates omitted water as a product or spread the two names of the ester over both answer lines.
— Examiner report, February/March 2026, 0620/42 Q5(f)(ii) (Cambridge)
Comprehensive responses • Some candidates correctly drew the displayed formula. Limited responses • Some candidates drew incorrect ester linkages, omitted hydrogens and/or added carbons to the alkyl group.
— Examiner report, February/March 2026, 0620/42 Q5(f)(iii) (Cambridge)
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