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IGCSE Co-ordinated Sciences (Double Award) 0654 · Chemistry · 139

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

5 real questionsasked in 5 of the last 10 exam series2024–2026usually: Describe, State

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. 0654/42 · 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. 0654/41 · October/November 2025 · Q8a[1]

    Table 8.1 shows the boiling point range of three fractions obtained from petroleum. Table 8.1 fraction boiling point range / °C naphtha 90 to 200 refinery gas less than 25 diesel oil 150 to 380 State which fraction is obtained at the top of the fractionating column.

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  3. 0654/41 · 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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  4. 0654/43 · October/November 2024 · Q2d[1]

    Compound C is a saturated compound. State what is meant by saturated.

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  5. 0654/31 · May/June 2024 · Q1[1]

    You have a sample of petroleum that weighs 500 kg. The fraction percentage composition is as follows: - Gasoline (petrol): 30% - Naphtha: 30% - Diesel oil: 26% - Bitumen: 4% What mass, in kilograms, does the diesel oil fraction represent?

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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, 0654/41 Q8(a) (Cambridge)

Past papers, syllabus and examiner reports © UCLES (Cambridge University Press & Assessment). Questions are matched to topics from the official syllabus. AssessPro is independent and not endorsed by Cambridge.

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: — IGCSE Co-ordinated Sciences (Double Award) 0654 past paper questions | AssessPro