# The principle of column chromatography is:Option 1)Gravitational forceOption 2)Capillary actionOption 3)Differential absorption of the substances on the solid phase.Option 4)Differential adsorption of the substances on the solid phase.

The main principle involved in column chromatography is adsorption of

the solutes of a solution through a stationary phase & separates the

mixture into individual components. This is based on the affinity towards

the mobile phase & stationary phase.

$\therefore$ option (4) is correct.

Option 1)

Gravitational force

Option 2)

Capillary action

Option 3)

Differential absorption of the substances on the solid phase.

Option 4)

Differential adsorption of the substances on the solid phase.

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