O-LevelChemistryChemistry of the Environment5070/12 · Oct/Nov 2015 · Q331 Mark

The flow chart shows how impure water can be treated to produce drinkable water. [Flow chart for water treatment] What is not removed from the water by this process?

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Aclay particles

Bmicrobes

Cnitrates

Dodours

✓ Correct answer

C: nitrates

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2015 Paper 1 Variant 2, question 33.

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