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The diagram below represents a paper chromatograph for three brands of juices suspected to contain banned food colourings
diagram on paper chromatography
The result showed presence of banned food colourings in L and M only

  1. On the diagram
    1. Circle the spots which show the banned colourings 
    2. Show the solvent front 
  2. On the same diagram indicate and label the baseline 

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answer on paper chromatograph

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