Question

Which among the following is the most suitable method for the separation of dyes in black ink?

• A. Sublimation
• B. Distillation
• C. Chromatography
• D. Crystallisation

Answer 1

The correct option is C Chromatography

Chromatography is a technique of separation of different components of a mixture based upon the difference in solubility in the same solvent.

Black ink is a mixture of various dyes which have different solubilities in the solvent. This difference in solubility helps in the separating of dyes. The dye which is more soluble in the solvent rises faster. In this way, different dyes are separated out of ink.