O-LevelChemistryAcids, Bases & Salts5070/11 · May/June 2011 · Q11 Mark

Copper(II) sulfate crystals are separated from sand using the four processes listed below. In which order are these processes used?

Afiltering, dissolving, crystallising, evaporating

Bfiltering, dissolving, evaporating, crystallising

Cdissolving, evaporating, filtering, crystallising

Ddissolving, filtering, evaporating, crystallising

✓ Correct answer

D: dissolving, filtering, evaporating, crystallising

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Topic: Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2011 Paper 1 Variant 1, question 1.

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