Q28 / 90 · JEE Main 2019 (09 Jan Shift 2) · Chemistry

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

  • A
    A→P;B→R;C→Q 
  • Correct answer
    B
    A→R;B→Q;C→P
  • C
    A→Q;B→P;C→R
  • D
    A→Q;B→R;C→P

Solution

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

Hence, the correct answer is option: 'B'.

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