AL2012

From a column chromotagraphy, how do we know which colours are pure and mixtures? Also how do we know the number of compounds on each of the colour samples and what colour they are?

Which samples were pure and which were mixtures? How many different component compounds are in each mixture and what colour are they? Are there two different coloured ink samples that contain a common component? ( ALL THESE QUESTIONS ARE RELATED TO THE CO...