In which of the following colloids is the dispersing medium a liquid?

The correct answer is  Shaving Cream.

Key PointsColloids with Liquid as Dispersing Medium

• In a colloid, the dispersing medium is the substance in which the colloidal particles are distributed.
• Shaving Cream is an example of a colloid where the dispersing medium is a liquid and the dispersed phase is gas, forming a foam.
• Mist is another colloid where the dispersing medium is gas, and the dispersed phase is liquid.
• Foam usually refers to a colloid where a gas is dispersed in a liquid, but in this context, it is not specified which type of foam.
• Jelly is a colloid where the dispersing medium is solid, and the dispersed phase is liquid.

Additional Information

• Colloids are mixtures where one substance is dispersed evenly throughout another at a microscopic level.
• They can be classified based on the state of the dispersing medium and the dispersed phase into various types such as sols, gels, emulsions, and foams.
• Foams are colloidal systems where a gas is dispersed in a liquid or solid. Examples include shaving cream (gas in liquid) and styrofoam (gas in solid).
• Emulsions are colloids where both the dispersing medium and the dispersed phase are liquids, such as milk or mayonnaise.
• Sols are colloids where solid particles are dispersed in a liquid, such as paint or blood.
• Gels are colloids where liquids are dispersed in solids, such as jelly or gelatin desserts.