Question

In column chromatography, identify the mobile and stationary phase from the following.

(a) Solid, Liquid

(b) Liquid, Solid

(c) Gas, Liquid

(d) Solid, Solid

I got this question in a national level competition.

I'd like to ask this question from Methods of Purification of Organic Compounds in section Organic Chemistry – Basic Principles and Technique of Chemistry – Class 11

Answer 1

Right option is (b) Liquid, Solid

The explanation is: In column chromatography, the mobile phase is made out of liquid or a mixture of liquids which is allowed to flow down the column, and the stationary phase consists of solid, that is the adsorbent(alumina or silica gel) over which the liquid(mobile phase) flows.