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What is the range of the size of colloidal particles?

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in Chemistry – Class 12 by (188k points)
What is the range of the size of colloidal particles?

(a) 1 to 100 nm

(b) 10 to 100 pm

(c) 1 to 100 µm

(d) 1 to 10 mm

I have been asked this question in an internship interview.

My doubt stems from Surface Chemistry topic in portion Surface Chemistry of Chemistry – Class 12

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Right choice is (a) 1 to 100 nm

The best I can explain: A colloid is typically a two-phase system consisting of a continuous phase (the dispersion medium) and dispersed phase (the particles or emulsion droplets). The particle size of the dispersed phase typically ranges from 1 nanometre to 1 micrometre.

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