◈ Oracle PrepSign Up Free
O-LevelChemistryAcids, Bases & Salts5070/12 · Oct/Nov 2023 · Q211 Mark

Which definition of a hydrated substance is correct?

Ahydrated substance is a soluble ionic compound such as barium sulfate.
Bhydrated substance is an ionic compound that contains no water.
Chydrated substance is one that is chemically combined with hydrogen.
Dhydrated substance is one that is chemically combined with water.

✓ Correct answer

D: hydrated substance is one that is chemically combined with water.

Practise more questions on this topic

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

Sign up free →

About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2023 Paper 1 Variant 2, question 21.

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

Acids, Bases & SaltsMay/June 20111m

A solution of fertiliser was tested as shown. Which ions must be present in the fertiliser?

Acids, Bases & SaltsMay/June 20111m

Which calcium compound does not increase the pH of acidic soils?

Acids, Bases & SaltsMay/June 20121m

The addition of dilute acid to a solution containing the anion Q and the subsequent use of limewater can be used to i…

Chemistry of the EnvironmentMay/June 20121m

Which pair of gases could be removed from the atmosphere using calcium carbonate?

Chemistry of the EnvironmentMay/June 20121m

In which parts of a motor car do the reactions, shown in the equations, take place?

Organic ChemistryMay/June 20121m

The diagrams show four monomers. How many of these monomers would react with the molecule below to form a polymer?

← Browse all past-paper questions

© 2026 Oracle Prep