Question

short answer forhow can we obtain coloured component (dey) from blue/black ink. give the principal of this technique​

Answer 1

Answer:

Evaporation is a 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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