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The correct match between Item-I and Item-II is: Item-I: (A) Benzaldehyde (B) Alumina (C) Acetonitrile. Item-II: (P) Mobile phase (Q) Adsorbent (R) Adsorbate

1. (A) → (Q); (B) → (P); (C) → (R)
2. (A) → (Q); (B) → (R); (C) → (P)
3. (A) → (P); (B) → (R); (C) → (Q)
4. (A) → (R); (B) → (Q); (C) → (P)

Correct answer: (A) → (R); (B) → (Q); (C) → (P)

Solution

In adsorption chromatography the sample benzaldehyde is the adsorbate (R), alumina is the adsorbent/stationary phase (Q), and acetonitrile is the mobile phase (P). So A->R, B->Q, C->P.

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