Which of the following mixtures can be separated by crystallisation?
P: Oil and water Q: Ink and water
R: Sugar and water S: Mud and water

P and Q

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R only

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Q and R

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S only

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Solution

The correct option is B R only
Crystallisation is the process of separating a soluble solid in the form of crystals from its solution.
Oil and mud are insoluble in water and cannot be separated from water by crystallisation.
Ink and sugar are soluble in water, but crystallisation can be only used to separate sugar from water.

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