Question

Which technique is preferred to separate the components of a dye?

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

Answer 1

The correct option is D Chromatography

Chromatography is a method used to separate various components present in a dye/ink. Dye/ink is a mixture of several coloured components and therefore we can separate those colours using chromatography. We can use a filter paper strip to perform chromatography.
Separation happens because different components have different solubilities in water. The component having higher solubility in water, rises more on the paper as compared to other components.