JEE Main 2019ChemistrySurface ChemistryEasyMCQ

JEE Main 2019 — Surface Chemistry Question with Solution

JEE Main 2019 (09 Jan Shift 2)

Question

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

Choose an option

Show full solutionCorrect option: B
Correct answer
BA→R;B→Q;C→P

Step-by-step explanation

In chromatography;

Benzaldehyde is a substance that is absorbed. It acts as an adsorbate.

Benzaldehyde:- Adsorbate

Alumina is a highly porous substance that adsorbs another substance. It acts as an adsorbent.

Alumina:- adsorbent

Acetonitrile is used as a mobile phase in chromatography.

Acetonitrile:- mobile phase

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About this question

This is a previous-year question from JEE Main 2019, covering the Surface Chemistry chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.