Question

Shaving cream produces foam. What kind of colloid is shaving cream?

• A. Liquid dispersed in a gas
• B. Gas dispersed in a liquid
• C. Solid dispersed in a liquid
• D. Solid dispersed in a gas

Answer 1

The correct option is B Gas dispersed in a liquid

Colloid consist of dispersed phase and dispersed medium here dispersed medium is gas consist of isobutane and isopentane (the volatile propellant) and the liquid is a dispersed phase

Shaving cream produce foam which is colloidal system wherein a gaseous phase is dispersed within a liquid continuous phase. All whipped and shaving cream come under this category of colloid.