0654.C11.3.07 — Describe how the properties of fractions obtained from petroleum change from the bottom to the top of the fractionating column, limited to: : past paper questions

Real questions on 0654.c11.3.07 — describe how the properties of fractions obtained from petroleum change from the bottom to the top of the fractionating column, limited to:

The newest 5 of 5 written questions. Open one to see it on the real paper.

1. 0973/42 · May/June 2026 · Q8c(i)[1]

   (i) Describe how the chain length of the fractions changes from the bottom to the top of the fractionating column. nett teen teen .......... [1]

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2. 0973/41 · May/June 2025 · Q8a[2]

   Describe how the chain length and the boiling points of the fractions change from the bottom to the top of the fractionating column. chain length boiling points

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3. 0973/41 · October/November 2023 · Q2b(i)[1]

   State the type of bond found in alkane molecules. Tick (3) one box. double covalent intermolecular ionic single covalent

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4. 0973/41 · October/November 2023 · Q2b(ii)[1]

   Alkanes are saturated hydrocarbons. State which molecule is a saturated hydrocarbon. Tick (3) one box. C 2 H 2 C 2 H 4 C 3 H 8 C H

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5. 0973/41 · May/June 2020 · Q11b(iii)[2]

   The alkanes are a homologous series. Describe what is meant by a homologous series.

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What examiners said

Many correct responses were seen. Most candidates correctly identified how either chain length or boiling point changed at the top of the fractionating column.

— Examiner report, May/June 2025, 0973/41 Q8(a) (Cambridge)

Many candidates identified the type of bond in an alkane as being a single bond.

— Examiner report, October/November 2023, 0973/41 Q2(b)(i) (Cambridge)

Many candidates identified C3H8 as the molecule that is a saturated hydrocarbon.

— Examiner report, October/November 2023, 0973/41 Q2(b)(ii) (Cambridge)