Question

Take a cup of milk, boil it and allow it to cool for some time and add a drop of curd and
keep for 6 hours and observe.​

Answer 1

Answer:

Background

Humans have turned milk into a multipurpose liquid. By itself, milk is a nutrient-rich beverage. But when you start treating milk in various processes, all kinds of other products can be created such as butter, yogurt, buttermilk and cheese. Milk mostly consists of fat, protein, lactose (a kind of sugar) and water. The milk fat is suspended in the water as fine droplets, which makes it an emulsion. Milk also contains a lot of proteins that, in this case, are mostly whey and casein. Because casein is poorly soluble in water, its proteins build spherical structures called micelles that allow them to stay in suspension as if they were soluble.