which of the following is a pure substance ?
(a)milk
(b)sea water
(c) soil
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Answer:
milk is a pure substance ?
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Answer:
Explanation:
Non of them are pure substance [when we talk of classification of pure substance.
As, all of them contain some form of other substance [or impurity]
Like in milk, it is made of two or more different substances like fats, proteins, sugar, etc. So, it is not Pure, Milk is Colloid
Same for sea water, it contain a lot of impurity in the form of Salt and other wastes
Soil also has many impurities like dust, small rocks, etc.
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