Leaving Cert Chemistry: Organic Chemistry, Hydrocarbons & Fuels questions

All carbon chemistry plus the fuels/oil-refining material that the syllabus keeps beside it: hydrocarbon families, functional groups and nomenclature, organic reaction types and mechanisms, organic synthesis, natural products, polymers, and instrumentation, together with sources of hydrocarbons, oil refining and octane number, and other chemical fuels.

84 past Chemistry questions on this topic, spanning 2015 to 2025, grouped by year. Every question opens on the exact page of the official paper, with its marking scheme beside it.

Organic Chemistry, Hydrocarbons & Fuels question pack

Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.

Try a random question now →

0 of 0 doneSaved on this device.

2025 · 4 questions

Paper 1 · Q250 marks

extraction, steam distillation, experimental

Paper 1 · Q650 marks

thermochemistry

Paper 1 · Q1050 marks

bonding, shapes of molecules, stoichiometry

2024 · 5 questions

Paper 1 · Q150 marks

volumetric analysis, acid-base titration, experimental

Paper 1 · Q250 marks

recrystallisation, experimental

Paper 1 · Q650 marks

thermochemistry

Paper 1 · Q1150 marks

bonding, water hardness, ozone depletion, iron extraction

2023 · 4 questions

2022 · 3 questions

Q250 marks

recrystallisation

Q650 marks

thermochemistry

2021 · 4 questions

Q650 marks

thermochemistry

Q1150 marks

environmental chemistry, atomic theory

Show 6 earlier years (2015 to 2020)

2020 · 3 questions

Q250 marks

oxidation, recrystallisation, yield calculation

Q650 marks

heat of formation

Q850 marks

solubility

2019 · 4 questions

Q250 marks

oxidation, yield calculation

Q650 marks

heat of reaction

Q850 marks

boiling points

Q1050 marks

atomic theory, mole calculations

2018 · 4 questions

Q250 marks

reflux, liquid-liquid extraction, recrystallisation

Q650 marks

heat of combustion

Q850 marks

boiling points, intermolecular forces

Q1050 marks

atomic theory, mole calculations

2017 · 4 questions

Q650 marks

hess's law

Q1050 marks

relative molecular mass, gas laws, atomic structure

2016 · 4 questions

Q150 marks

volumetric analysis, titration, standardisation

Q250 marks

oxidation, melting point

Q650 marks

heat of reaction

2015 · 4 questions

Q250 marks

recrystallisation, oxidation number, yield calculation

Q650 marks

heat of reaction

Q850 marks

intermolecular forces, boiling points

Q1050 marks

electrolysis, mole calculations

Organic Chemistry, Hydrocarbons & Fuels question pack

Every past question on this topic, taken from the official exam papers and set out for printing. Free, no sign-up.

Try a random question now →

0 of 0 doneSaved on this device.

2025 · 4 questions

Paper 1 · Q150 marks

reflux, distillation

Paper 1 · Q450 marks

short questions, general knowledge, periodic trends

2024 · 4 questions

Paper 1 · Q450 marks

short answer, ionic bonding, isotopes, hazards, diffusion, oxidation, x-ray crystallography

2023 · 4 questions

2022 · 3 questions

Show 6 earlier years (2015 to 2020)

2020 · 3 questions

Q150 marks

recrystallisation

Q650 marks

molecular structure

2019 · 4 questions

Q150 marks

experimental

Q850 marks

oxidation, molecular shape

Q1050 marks

chemical equilibrium, le chatelier, mole calculations

2018 · 4 questions

Q150 marks

experimental

Q650 marks

greenhouse gases

Q750 marks

water hardness, water treatment, flocculation

2017 · 3 questions

Q150 marks

chromatography, experimental

Q850 marks

oxidation

2016 · 5 questions

Q150 marks

experimental

Q450 marks

short answer, states of matter, atomic theory, gas laws

Q1150 marks

chemical equilibrium, le chatelier, exothermic reactions, moles

2015 · 4 questions

Q150 marks

steam distillation, separation, experimental

Q750 marks

acids and bases, ph, water treatment

Q850 marks

oxidation

💡
Practising a paper?Open a real past question and the ExamAI tutor works through it with you. Free, no account needed.
Try a question

Other Chemistry topics

← All Chemistry past papers

Questions come from the official State Examinations Commission papers. Every link opens the original PDF on examinations.ie. The topic packs reproduce the same questions unchanged, with the year, paper and question number printed on each one.