Question

Chromatography is a technique used to separate mixtures. The mixture is dissolved in a fluid. The phase which is mostly solid and through which the fluid containing the mixture travels is known as the :

• A. stationary phase
• B. mobile phase
• C. eluate
• D. eluent

Answer 1

The correct option is A stationary phase

The stationary phase is mostly solid and it is the basic structure holding the chromatography technique.

The mobile phase containing the chemical sample travels all the way up or down the stationary phase.

For example, in thin-layer chromatography, the stationary phase is the silica gel or $Si{O}_2$

Hence the correct option is A.