Which one of the following is not a colloid? (a) Milk (b) Blood (c) Ice-cream (d) Urea solution
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Ice cream is not colloidal
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Answer: Option (d) is the correct answer.
Explanation:
A mixture of two substances in which one substance is insoluble and microscopically dispersed throughout another substance is known as a colloid.
In the given options, milk, blood and ice-cream will be a colloid as there will be presence of some microscopically insoluble substances.
Whereas urea solution is a true solution and there will be no insoluble substances. Thus, we can conclude that it is not a colloid.
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