<prompt> Chromatography technique works on the principle ofAffinityIon-exchangeMolecular sievingAll of the above  <response>: D All of the above CHROMATOGRAPHY usually consists of a mobile phase and a stationary phase. The mobile phase refers to the mixture of substances to be separated, dissolved in a liquid or a gas. Stationary phase is a porous solid matrix through which the sample contained in the mobile phase percolates. Interaction between the mobile and stationary phases results in the separation of the compounds from the mixture. These interactions include the physico-chemical principles such as adsorption, partition, ion-exchange, molecular sieving and affinity. 