Question

prove that milk contains proteins

Answer 1

Milk contains two major types of protein – casein and whey. Casein proteins form curds when acid is added to milk, an important step in the cheese-making process. Casein makes up 82 percent of the proteins found in cow’s milk.

Answer 2

Yes, milk is regarded as a mixture and not a pure substance. To be more specific, mil is a colloidal mixture. In a colloidal mixture. Ina colloidal mixure, particles are suspended freely in the solvent.In milk, the particles consist of fatty acids, proteins, minerals ions etc in a solvent of water (constituting most of the solvent part). Colloidal mixtures exhibit a typicaleffect called the Tyndall Effect. You can demonstrate Tyndall Effect in your room itself. Take a jar containing a mixture of milk and water in an approximate ratio of 5:1. Place it in your room and darken the room by turning off all the lights and putting the curtains. Apply a focus of torch light on the mouth of the jar. Theshine produced as such is called the Tyndall Effect, which is exhibited only by colloidal mixtures like milk, blood, etc.It is a mixture of many, many different substances.It is a mixture so, it is nota pure substance.