Question

Consider the following pairs.

1. In an emulsion, the dispersing medium is liquid and dispersing phase is also liquid.

2. In gel, the dispersing medium is solid and the dispersing phase is liquid.

Which among the above statements is/are correct?

1. 1 only
2. 2 only
3. Both 1 and 2
4. Neither 1 nor 2

Answer 1

Correct Answer - Option 3 : Both 1 and 2

The correct answer is Both 1 and 2.

• A colloid is a mixture that has particles ranging between 1 and 1000 nanometers in diameter.
• We cannot see them with naked eyes because of the small size of colloidal particles.
• Colloids are big enough to scatter a beam of light passing through it and make its path visible.
• They cannot be separated from the mixture by the process of filtration.
• The components of a colloidal solution are the dispersed phase and the dispersion medium.
• Dispersed Phase is what is suspended in the form of fine droplets in a continuous phase.
• Dispersed Medium is the medium in which the dispersed phase is suspended.

S. No	Dispersed Phase	Dispersing Medium	Type
1.	Liquid	Gas	Aerosol
2.	Gas	Liquid	Foam
3.	Liquid	Liquid	Emulsion
4.	Liquid	Solid	Gel
5.	Solid	Liquid	Sol
6.	Gas	Solid	Foam
7.	Solid	Solid	Solid Sol