◈ Oracle PrepSign Up Free
O-LevelChemistryRates of Reaction5070/11 · May/June 2019 · Q171 Mark

The table shows the energy released by the complete combustion of some compounds. Which compound releases the least energy when 1 g is completely burned?

Diagram for this question, from the exam paper

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.

Abenzene
Bheptane
Coctane
Dpropane

✓ Correct answer

A: benzene

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Rates of Reaction and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2019 Paper 1 Variant 1, question 17.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Chemistry questions

Rates of ReactionMay/June 20111m

The diagram represents the manufacture of sulfuric acid by the Contact process. What is used in step R?

Rates of ReactionMay/June 20121m

A student measured the rate of reaction between calcium carbonate and dilute hydrochloric acid. A graph showing the v…

Rates of ReactionMay/June 20121m

The diagram shows an apparatus used to compare rates of diffusion. At which labelled position did a white deposit of …

ElectrolysisMay/June 20141m

In which circuit does the bulb light?

Atomic StructureMay/June 20141m

An element is in Period 3 and Group VII of the Periodic Table. Which statement about this element is correct?

Bonding & StructureMay/June 20141m

The table contains information about the physical properties of the elements chlorine, copper and iron. In the table …

← Browse all past-paper questions

© 2026 Oracle Prep