Which of the following method is useful to obtain colored component (dye) from blue/black ink?

Evaporation

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Filtration

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Sublimation

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Distillation

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Solution

The correct option is A Evaporation
Evaporation is useful method to obtain coloured component (dye) from blue/black ink. Ink is a colloidal solution - a heterogeneous mixture of dye and water. When this mixture is heated, water evaporates and dye is left out.

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