IGCSE Practice

Cambridge IGCSE·Co-ordinated Sciences 0654·Chemistry Fuels Petroleum
📋Key knowledge — Organic Chemistry

Formulas & equations

  • Combustion of alkane: CₙH₂ₙ₊₂ + O₂ → CO₂ + H₂O
  • Addition of H₂ to alkene: CₙH₂ₙ + H₂ → CₙH₂ₙ₊₂ (hydrogenation)
  • Fermentation: C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ (ethanol production)
  • Esterification: alcohol + carboxylic acid ⇌ ester + water (concentrated H₂SO₄ catalyst)

Key facts & rules

  • Alkanes: saturated (only C−C single bonds). General formula CₙH₂ₙ₊₂. Methane (CH₄), ethane (C₂H₆), propane, butane.
  • Alkenes: unsaturated (contain C=C double bond). General formula CₙH₂ₙ. Ethene (C₂H₄), propene.
  • Test for alkene: bromine water → decolourises (goes from orange to colourless).
  • Cracking: long-chain alkanes → shorter alkanes + alkenes (thermal or catalytic cracking).
  • Addition polymerisation: alkene monomers → polymer (e.g. ethene → poly(ethene)).
  • Fractional distillation of crude oil: different chain lengths have different boiling points — separated by size.

IGCSE Chemistry — Fuels & petroleum

54 Cambridge IGCSE 0654 questions on fuels & petroleum, across all three components.

About fuels & petroleum on IGCSE 0654

Every Cambridge IGCSE Co-ordinated Sciences 0654 question on fuels & petroleum (Organic chemistry, Chemistry), across all three exam components. Theory and alternative-to-practical come with full mark schemes; multiple choice is interactive — click an option to check it.

Theory

Papers 3 & 4 · 17 questions · Structured written questions, each with its full mark scheme.
Fuels & petroleum — Core theory questions10 total · Paper 3

Exercise 1 — IGCSE 0654 Jun 2025 Paper 31 Q8

Cambridge past paperCore12 marks Paper 31Jun 2025
IGCSE 0654 Jun 2025 Paper 31 Question 8 — Fuels & petroleum
Show mark scheme
Mark scheme for IGCSE 0654 Jun 2025 Paper 31 Q8

Exercise 2 — IGCSE 0654 Jun 2024 Paper 31 Q8

Cambridge past paperCore10 marks Paper 31Jun 2024
IGCSE 0654 Jun 2024 Paper 31 Question 8 — Fuels & petroleum
Show mark scheme
Mark scheme for IGCSE 0654 Jun 2024 Paper 31 Q8

Exercise 3 — IGCSE 0654 Mar 2024 Paper 32 Q8

Cambridge past paperCore9 marks Paper 32Mar 2024
IGCSE 0654 Mar 2024 Paper 32 Question 8 — Fuels & petroleum
Show mark scheme
Mark scheme for IGCSE 0654 Mar 2024 Paper 32 Q8
Fuels & petroleum — Extended theory questions7 total · Paper 4

Exercise 4 — IGCSE 0654 Jun 2025 Paper 41 Q8

Cambridge past paperExtended9 marks Paper 41Jun 2025
IGCSE 0654 Jun 2025 Paper 41 Question 8 — Fuels & petroleum
Show mark scheme
Mark scheme for IGCSE 0654 Jun 2025 Paper 41 Q8

Exercise 5 — IGCSE 0654 Nov 2025 Paper 41 Q8

Cambridge past paperExtended9 marks Paper 41Nov 2025
IGCSE 0654 Nov 2025 Paper 41 Question 8 — Fuels & petroleum
Show mark scheme
Mark scheme for IGCSE 0654 Nov 2025 Paper 41 Q8

Exercise 6 — IGCSE 0654 Jun 2024 Paper 43 Q2

Cambridge past paperExtended8 marks Paper 43Jun 2024
IGCSE 0654 Jun 2024 Paper 43 Question 2 — Fuels & petroleum
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Mark scheme for IGCSE 0654 Jun 2024 Paper 43 Q2
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Multiple choice

Papers 1 & 2 · 37 questions · Click an option (A–D) to check your answer instantly.
Fuels & petroleum — Core multiple choice questions26 total · Paper 1

Exercise 1 — IGCSE 0654 Oct/Nov 2025 Paper 11 Q25

Cambridge past paperCore1 mark Paper 11Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 11 Question 25 — Fuels & petroleum
Show answer
Correct answer: D

Exercise 2 — IGCSE 0654 May/June 2025 Paper 11 Q26

Cambridge past paperCore1 mark Paper 11May/June 2025
IGCSE 0654 May/June 2025 Paper 11 Question 26 — Fuels & petroleum
Show answer
Correct answer: D

Exercise 3 — IGCSE 0654 Oct/Nov 2025 Paper 12 Q19

Cambridge past paperCore1 mark Paper 12Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 12 Question 19 — Fuels & petroleum
Show answer
Correct answer: B

Exercise 4 — IGCSE 0654 May/June 2025 Paper 12 Q24

Cambridge past paperCore1 mark Paper 12May/June 2025
IGCSE 0654 May/June 2025 Paper 12 Question 24 — Fuels & petroleum
Show answer
Correct answer: A
Fuels & petroleum — Extended multiple choice questions11 total · Paper 2

Exercise 5 — IGCSE 0654 Oct/Nov 2025 Paper 21 Q23

Cambridge past paperExtended1 mark Paper 21Oct/Nov 2025
IGCSE 0654 Oct/Nov 2025 Paper 21 Question 23 — Fuels & petroleum
Show answer
Correct answer: C

Exercise 6 — IGCSE 0654 May/June 2025 Paper 23 Q27

Cambridge past paperExtended1 mark Paper 23May/June 2025
IGCSE 0654 May/June 2025 Paper 23 Question 27 — Fuels & petroleum
Show answer
Correct answer: C

Exercise 7 — IGCSE 0654 May/June 2024 Paper 22 Q26

Cambridge past paperExtended1 mark Paper 22May/June 2024
IGCSE 0654 May/June 2024 Paper 22 Question 26 — Fuels & petroleum
Show answer
Correct answer: B

Exercise 8 — IGCSE 0654 Oct/Nov 2024 Paper 22 Q26

Cambridge past paperExtended1 mark Paper 22Oct/Nov 2024
IGCSE 0654 Oct/Nov 2024 Paper 22 Question 26 — Fuels & petroleum
Show answer
Correct answer: D
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More Organic chemistry subtopics