◈ Oracle PrepSign Up Free
O-LevelChemistryOrganic Chemistry5070/12 · Oct/Nov 2019 · Q321 Mark

A student investigates the properties of a colourless organic liquid. Which observation shows that the liquid is unsaturated?

AIt decolourises aqueous bromine.
BIt has a sweet smell.
CIt is a good solvent for organic compounds.
DIt produces carbon dioxide when burned.

✓ Correct answer

A: It decolourises aqueous bromine.

Practise more questions on this topic

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

Sign up free →

About this question

Topic
Organic Chemistry, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 2, question 32.

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

Organic ChemistryMay/June 20121m

A compound Y is thought to be an organic acid. Which reaction shows that Y is an organic acid?

Organic ChemistryMay/June 20121m

The boiling points of the alcohols increase as their relative molecular mass increases. Which alcohol has the highest…

Organic ChemistryMay/June 20121m

Which of the following is a type of naturally occurring polymer?

StoichiometryMay/June 20121m

15.0 cm³ of 1.0mol/dm³ potassium hydroxide just neutralise 20.0 cm³ of a solution of nitric acid. What is the concent…

Atomic StructureMay/June 20121m

An atom, X, contains 16 protons. Which statement about X is correct?

StoichiometryMay/June 20121m

The equation for the burning of hydrogen in oxygen is shown. 2H2(g) + O2(g) → 2H2O(g) What does this equation indicate?

← Browse all past-paper questions

© 2026 Oracle Prep