O-LevelChemistryChemistry of the Environment5070/12 · May/June 2016 · Q321 Mark

Which ion is present in both sewage and fertilisers and can cause eutrophication when it enters rivers?

Acarbonate

Bchloride

Cnitrate

Dsulfate

✓ Correct answer

C: nitrate

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

Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2016 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