Home Chemistry Surface Chemistry Adsorption and Adsorption Isotherm Activated charcoal is used to remove colouri…
Chemistry Surface Chemistry Adsorption and Adsorption Isotherm Single Correct MCQ
Published on: August 13, 2026

Activated charcoal is used to remove colouring matter from pure substances. It works by

A
Oxidation
B
Reduction
C
Bleaching
D
Adsorption

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Text Solution

Verified by Experts
The correct answer is:
D

It has been observed that the surface of a solid (or liquid) has the tendency to attract and retain the molecules of other immiscible phase with which it is brought into contact. These molecules remian only at the surface and do not go deeper into the bulk. This tendency of accumulation of molecular species at the surface than in the bulk of a solid (or liquid) it termed adsorption.

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