O-LevelChemistryChemistry of the Environment5070/11 · Oct/Nov 2020 · Q331 Mark

Two statements about the water in lakes are given. statement 1 Fish are unable to live in some lakes because there is insufficient oxygen in the water. statement 2 Fertilisers can be washed into lakes where they cause eutrophication. What is correct?

ABoth statements are correct and statement 2 explains statement 1.

BBoth statements are correct but statement 2 does not explain statement 1.

CStatement 1 is correct but statement 2 is incorrect.

DStatement 2 is correct but statement 1 is incorrect.

✓ Correct answer

A: Both statements are correct and statement 2 explains statement 1.

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, Oct/Nov 2020 Paper 1 Variant 1, question 33.

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