Question

Which basic principle is used in chromatography?

Options

• Difference in densities of components

• Difference in boiling points of components

• Difference in rates of movement through a porous medium

• Difference in colour of components

Answer 1

Difference in rates of movement through a porous medium

Explanation: 

In chromatography, different components move through a porous medium at different rates, which helps to separate them.