Is blood and milk pure or impure?

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Solution

No it's not a pure substance. Blood is half made out of plasma. which contains proteins, water, and salts. And the other half of cells or platelets, which carry oxygen, calcium, sugar, ions…etc
Milk is a complex blend of water, carbohydrates, fats, proteins and many other components such as calcium-containing compounds. There are various grades of milk. Thus it is a mixture

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