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Chemistry · May / June 2025 · Paper 12 · Question 37

5070Chromatography

Four samples are analysed using paper chromatography. P, Q and R are pure substances. M is a mixture of different substances. [chromatography diagram showing solvent front, baseline, and spots for M, P, Q, R] Which substances does mixture M contain?

  1. AP, Q and R
  2. BP, Q and another substance
  3. CP and Q only
  4. DP and R only

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Correct answer: B. P, Q and another substance

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