Skip to main content
O-LevelChemistryStoichiometry5070/11 · May/June 2022 · Q351 Mark

One mole of each of the compounds shown is completely combusted. C5H12O C6H12 C6H14 C6H14O How many of the compounds need exactly nine moles of oxygen for complete combustion?

A1
B2
C3
D4

✓ Correct answer

B: 2

Practise more questions on this topic

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

Sign up free →

About this question

Topic
Stoichiometry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, May/June 2022 Paper 1 Variant 1, question 35.

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

© 2026 Oracle Prep