component A dissolves in component B to form a liquid mixture.if this mixture is subjected to a process C then only component A can be recovered.but this mixture is subjected to another process D,then both the components A and        B can be recovered from the mixture.name the components Aand B,the processD and C

As component A dissolves in component B, then A is a solid component called solute and B is a liquid component called solvent. Process C separates only A. So its  evaporation. In this process the liquid mixture is evaporated in which the solvent gets evaporated and solute remains. Process D separates the two. So its a crystallisation process. In crystallisation a saturated solution is prepared, heated and filtered. The filtrate is collected and evaporated to get the pure component A.