Question

In chromatography, the mobile phase is usually ______.

Options

• A solid adsorbent

• A porous plate

• A solvent or gas that moves

• A coloured pigment

Answer 1

In chromatography, the mobile phase is usually a solvent or gas that moves.

Explanation: 

The mobile phase is the moving phase, usually a solvent or gas, which carries the components of the mixture through the stationary phase.