Question

हिंदी रिवीजन टेस्ट का पेपर का हल12​

Answer 1

Answer:

Have you ever noticed the word pure written on the packs of these consumables? For a common person pure means having no adulteration But for a scientist all these things are actually mixtures of different substances and hence not pure For example. milk is actually a mixture of water fat proteins etc When a scientist says that something is pure. it means that all the constituent particles of that substance are the same in their chemical nature A pure substance consists of a single type of particles. In other words, a substance is a pure single form of matter As we look around, we can see that most of the matter around us exist as mixtures of two or more pure components, for example, sea water minerals, sol etc are all mixtures . 2.1 What is a Mixture? Mixtures are constituted by more than one kind of pure form of matter We know that dissolved sodium chloride can be separated from water by the physical process of