JAMB - Chemistry (2003 - No. 4)
The filter in the cigarette reduces the nicotine content by
Burning
Adsorption
Evaporation
Absorption
Explication
The nicotine content is a solute carried by the smoke (mobile phase) and it is removed by the filter (stationary phase) by adsorption. Adsorption is the process by which a solid holds molecules of a gas or liquid or solute as a thin film.