Question

what is chromatography for which type of mixture is it used

Answer 1

Chromatography is a laboratory technique for the separation of a mixture. The mixture is dissolved in a fluid called the mobile phase, which carries it through a structure holding another material called the stationary phase

Answer 2

The mobile phase is a suitable liquid solvent or mixture of solvents. You probably used paper chromatographyas one of the first things you ever did in chemistry to separate out mixturesof coloured dyes - for example, the dyes which make up a particular ink