O-LevelChemistryChemistry of the Environment5070/11 · Oct/Nov 2019 · Q311 Mark

The water supply can be purified by filtration and chlorination. Which substance remains in the water supply after these treatments?

Afine sand

Bharmful microbes

Cmineral salts

Dsolid organic matter

✓ Correct answer

C: mineral salts

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Topic: Chemistry of the Environment, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, Oct/Nov 2019 Paper 1 Variant 1, question 31.

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