Q1: Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

ANS:D - one of the liquid components has very high affinity towards the solvent.

Solvent extraction, also known as liquid-liquid extraction, is indeed preferred for the separation of components of liquids under various conditions. The statement that best describes a situation where solvent extraction is preferred is: "One of the liquid components has very high affinity towards the solvent." Solvent extraction is particularly effective when one of the liquid components exhibits a strong affinity for the extracting solvent. This high affinity facilitates selective extraction of the desired component from the liquid mixture, leading to efficient separation. The extracting solvent acts as a selective agent, preferentially extracting the desired component while leaving the unwanted components behind. While the other conditions mentioned in the options may also influence the choice of separation method in certain situations, the presence of a component with high affinity towards the solvent is a key factor that makes solvent extraction an attractive option for separation.