Question

Why does the milk that comes in packets not spoil?

Answer 1

The milk does not get spoiled because the milk is pasturized. Pasteurisation is a method of preserving milk. 

Answer 2

Answer:

The packet milk is not spoiled because they are pasteurized and then packed. Pasteurization is done by heating milk at 72.5 degrees to kill all bacteria that are harmful and cooling it immediately to less than '5-degree centigrade'. It can remain in good condition for 48 hours if kept in refrigerated condition.

Explanation:

Pasteurization is all about heating the milk and then cooling it down quickly. It is done to eliminate certain bacteria.