Is Matter Around Us Pure — Science STD 9 — Question
Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure1 Mark
MCQ
Method used for separating dyes in ink is called $...........$ ?
A
Crystallization
✓
Chromatography
C
Distillation
D
Filtration
✓
Answer
Correct option: B.
Chromatography
Chromatography is a method of separating out materials from a mixture.
Ink is a mixture of several dyes and therefore we can separate those colors from one another using chromatography.
When ink is exposed to certain solvents the colors dissolve and can be seperated out.
When we expose a piece of paper with ink on it to a solvent, the ink spreads across the paper when the ink dissolves.
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