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Chemistry · Oct / Nov 2025 · Paper 11 · Question 38

5070Chromatography

A chromatogram of mixture X and pure substances P, Q, R and S is shown. Which statement is correct?

  1. AR is completely insoluble in the solvent used.
  2. BThe Rf value of Q is greater than the Rf value of S.
  3. CX is a mixture of Q, R and S.
  4. DThe paper is placed in the solvent with the solvent above the baseline.

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Correct answer: B. The Rf value of Q is greater than the Rf value of S.

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