chromatogram of pure samples of food colours of X, Y and Z is given in the following illustration
1. Three samples of same food materials A, B and C are analysed for purity, with the help of the chromatogram in illustration
2. Identify the impure sample.

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chromatogram of pure samples of food colours of X, Y and Z is given in the following illustration 1. Three samples of same food materials A, B and C are analysed for purity, with the help of the chromatogram in illustration 2. Identify the impure sample.

chromatogram of pure samples of food colours of X, Y and Z is given in the following illustration
1. Three samples of same food materials A, B and C are analysed for purity, with the help of the chromatogram in illustration
2. Identify the impure sample.