alleryStart learning →Which method separates the different coloured pigments mixed into an ink?
AMagnetic sorting
BSimple sieving
CHand separation
DChromatography
Answer & Solution
Correct answer: D. Chromatography
1. Most inks are a blend of several coloured pigments.
2. Chromatography spreads those pigments apart as a liquid carries them along paper.
3. Each pigment travels a different distance, so the colours separate into bands.
4. Sieving and hand sorting cannot separate substances that are fully mixed.
_Source: Siyavula Natural Sciences Grade 7 (CC BY 4.0), Chromatography_
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