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What isthe order of diameter of colloidal particles?

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in Chemistry – Class 12 by (188k points)
What isthe order of diameter of colloidal particles?

(a) 10^-3 m

(b) 10^-6 m

(c) 10^-15 m

(d) 10^-7 m

I had been asked this question during an online exam.

I need to ask this question from Surface Chemistry topic in portion Surface Chemistry of Chemistry – Class 12

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Right answer is (d) 10^-7 m

For explanation: Colloidal state of matter is, therefore, a state in which the size of the particles is such (1 to 1000 nm) that they can pass through filter paper but not through animal or vegetable membrane. Thus, every substance can be brought into the colloidal state by adopting suitable methods.

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