0653.C11.4.03 — Describe the manufacture of alkenes and hydrogen by the cracking of larger alkane molecules using a high temperature and a catalyst: past paper questions
Real questions on 0653.c11.4.03 — describe the manufacture of alkenes and hydrogen by the cracking of larger alkane molecules using a high temperature and a catalyst
The newest 15 of 15 written questions. Open one to see it on the real paper.
- 0653/31 · May/June 2025 · Q6a(i)[1]
decolourises aqueous bromine
See it on the paper → - 0653/42 · May/June 2025 · Q6c[1]
Name the process used to manufacture alkenes from alkanes.
See it on the paper → - 0653/42 · May/June 2025 · Q6e(i)[1]
State the type of catalyst used in this reaction.
See it on the paper → - 0653/42 · February/March 2025 · Q6b[1]
Name the process that produces alkenes from larger alkanes.
See it on the paper → - 0653/42 · February/March 2025 · Q6d(i)[1]
State the type of catalyst used in the reaction of alkenes with steam.
See it on the paper → - 0653/42 · February/March 2025 · Q6d(ii)[1]
Name the catalyst used in the reaction of alkenes with hydrogen.
See it on the paper → - 0653/21 · October/November 2024 · Q27[1]
Which statement about cracking is correct?
See it on the paper → - 0653/21 · May/June 2024 · Q27[1]
Which products are obtained by the cracking of larger alkane molecules?
See it on the paper → - 0653/43 · May/June 2024 · Q8c(ii)[2]
State the conditions required for cracking. and
See it on the paper → - 0653/42 · February/March 2024 · Q8c(i)[1]
Complete the symbol equation for the cracking of decane. C 10 H 22 C 8 H 18 +
See it on the paper → - 0653/42 · February/March 2024 · Q8c(ii)[2]
State two conditions needed for cracking.
See it on the paper → - 0653/12 · October/November 2023 · Q27[1]
Which process is used to produce alkenes?
See it on the paper → - 0653/22 · May/June 2023 · Q27[1]
Which equation represents cracking?
See it on the paper → - 0653/32 · February/March 2023 · Q8b(ii)[1]
State the process that produces ethene and other unsaturated hydrocarbon molecules from alkanes.
See it on the paper → - 0653/43 · May/June 2022 · Q5b[1]
Ethene is made from naphtha in an industrial process. Name this process.
See it on the paper →
What examiners said
Some candidates knew the compound C2H4, ethene, that decolourises aqueous bromine. The main error was CaCO3.
— Examiner report, May/June 2025, 0653/31 Q6(a)(i) (Cambridge)
Candidates generally recalled the term cracking as the process used to manufacture alkenes from alkanes.
— Examiner report, May/June 2025, 0653/42 Q6(c) (Cambridge)
Some candidates recalled that an acidic catalyst is used in the production of ethanol from ethene and steam.
— Examiner report, May/June 2025, 0653/42 Q6(e)(i) (Cambridge)
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