CBSE Class 12-science Answered
Emulsions are generally prepared by vigorously shaking two liquids. Since the two liquids do not mix well, the emulsion is generally unstable and the two liquids may separate out on standing for sometime. Therefore to form stable emulsions small quantities of certain other substances are added during their preparation. The substances which are added to stabilize the emulsions are called emulsifier or emulsifying agent. The substance that are commonly used as emulsifying agent are gum, soap of different forms, gelatin, albumin etc.