The technique of chromatography is used to –
- AIdentify coloured substances
- BDetermine the structure of substances
- CDry distillation of colouring substances
- DSeparate the substances from a mixture
Show answer and explanation
Correct answer: (d) Separate the substances from a mixture
Explanation
Chromatography separates the different substances in a mixture. Each one moves at its own speed through a medium such as paper or a column, so they spread apart.
It was first used to separate coloured plant pigments, which gave it its name (Greek chroma, colour), but it is used for colourless substances too.