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Course: Igcse Chemistry
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Igcse Chemistry

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Separation and purification – Check yourself

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Separation and purification IGCSE Chemistry check yourself quiz: free practice for IGCSE Chemistry. Work through this Separation and purification IGCSE Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 12.4 Separation and purification — Notes lesson. More practice: IGCSE Chemistry — all units. Syllabus: Cambridge IGCSE Chemistry 0620 syllabus.

1.
Which method is best for separating sand from a salt solution?
Filtration
Crystallisation
Simple distillation
Paper chromatography
2.
Which method gives pure water from seawater?
Filtration
Simple distillation
Paper chromatography
Evaporation to dryness
3.
Ethanol (b.p. 78 °C) and water (b.p. 100 °C) are mixed. Which method separates them?
Filtration
Crystallisation
Fractional distillation
Decanting
4.
How are crystals of hydrated copper(II) sulfate obtained from its solution?
Evaporate all the water rapidly to dryness
Heat to the saturation point, cool, then filter off the crystals
Filter the solution through filter paper
Add more water and leave it to stand
5.
Which method separates a mixture of two miscible liquids with different boiling points?
Crystallisation
Chromatography
Fractional distillation
Filtration
6.
A pure substance has a sharp, fixed melting point.
True
False
7.
The solid left on the filter paper after filtration is called the __________.
solute
solvent
filtrate
residue
8.
Which method obtains pure crystals of copper(II) sulfate from its solution?
Crystallisation
Filtration
Distillation
Chromatography
9.
Impurities lower the melting point of a substance.
True
False
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