Question

Soap removes grease by
1. Coagulation
2. Adsorption
3. Emulsification
4. Osmosis
5. None of the above/More than one of the above

Answer 1

Correct Answer - Option 3 : Emulsification

The correct answer is Emulsification.

• Soap removes grease by the process of Emulsification.
• Emulsification:
  • Emulsification is the process of dispersing two or more immiscible liquids together to form a semistable mixture.
  • In food applications, these two liquids generally consist of an organic (oil) phase and an aqueous (water) phase that is stabilized by the addition of a food-grade emulsifier (surfactant).
  • The most general emulsions are of the oil-in-water (O/W) type.
  • Examples of food emulsions include mayonnaise, sauces, ice cream, and milk.
  • Water-in-oil (W/O)-type emulsions are less common in food applications, with the most prominent example being butter, which is an emulsion of water dispersed in milk fat.

• Coagulation:
  • Coagulation, generally known as clotting, is the process by which blood changes from a liquid to a gel, forming a blood clot.
  • It potentially results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair.
• Adsorption:
  • Adsorption is the adhesion of atoms, ions or molecules from a gas, liquid or dissolved solid to a surface.
  • This process creates a film of the adsorbate on the surface of the adsorbent.
  • This process differs from absorption, in which a fluid is dissolved by or permeates a liquid or solid.
• Osmosis:
  • Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.​