Question

What is emulsifying action? Can boiling the water remove hardness of water?

Answer 1

An emulsion is a colloid of two or more immiscible liquids where one liquid contains a dispersion of the other liquids. In other words, an emulsion is a special type of mixture made by combining two liquids that normally don't mix. The word emulsion comes from the Latin word meaning "to milk" (milk is one example of an emulsion of fat and water). The process of turning a liquid mixture into an emulsion is called emulsification.

only temporary hardness can be removed by boiling the water.Permanent hardness cannot be removed by just boiling the water.