Which of the following is true about HPLC and gas chromatography?
Ans. is 'd' i.e., In gas chromatography, the mobile phase is always gasif a solute has an affinity for the mobile phase, it moves faster. If a solute has an affinity for stationary phase, it gets retarded.That way, the solutes get separated based on differential distribution of them between a mobile phase and a stationary phase.
In Gas Chromatography, the stationary phase is always solid
In HPLC, the stationary phase is solid
In HPLC, the mobile phase is a liquid or solid
In Gas chromatography, the mobile phase is always gas