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Question:

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

A→P;B→R;C→Q

A→Q;B→R;C→P

A→R;B→Q;C→P

A→Q;B→P;C→R

Solution:

Benzaldehyde is a substance that is absorbed. It acts as an adsorbate. Alumina is a highly porous substance that adsorbs another substance. It acts as an adsorbent. Acetonitrile is used as a mobile phase in chromatography. Hence, option B is correct.