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By using what can the colloidal particles can be separated from particles of true solution?

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in Chemistry – Class 12 by (188k points)
By using what can the colloidal particles can be separated from particles of true solution?

(a) Parchment paper

(b) An ultracentrifuge machine

(c) An electrolyte

(d) Ordinary cloth

This question was addressed to me in an interview.

This question is from Surface Chemistry topic in chapter Surface Chemistry of Chemistry – Class 12

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The correct answer is (a) Parchment paper

The explanation is: Centrifugation is a process which involves the use of the centrifugal force for the sedimentation of heterogeneous mixtures with a centrifuge used in industry and in laboratory settings. This process is used to separate two immiscible liquids. Particles of colloids are big enough to be blocked by parchment paper or animal membrane.

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