Match List I with List II
|
LIST I Type of Colloids |
LIST II Example |
|
A. Sol |
I. Butter |
|
B. Gel |
II. Fog |
|
C. Foam |
III. Paints |
|
D. Aerosol |
IV. Whipped Cream |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-III,B-I,C-IV,D-II
A colloid is named by the physical states of its dispersed phase and dispersion medium.
(A) Sol — This matches III. Paints. A sol is a solid dispersed in a liquid.
(B) Gel — This matches I. Butter. A gel is a liquid dispersed in a solid; cheese and jellies are other examples.
(C) Foam — This matches IV. Whipped Cream. A foam is a gas dispersed in a liquid; froth and soap lather are others.
(D) Aerosol — This matches II. Fog. Fog is a liquid dispersed in a gas; mist, cloud and insecticide sprays are others.
Note: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Classification Based on Physical State of Dispersed Phase and Dispersion Medium – “Depending upon whether the dispersed phase and the dispersion medium are solids, liquids or gases, eight types of colloidal systems are possible. A gas mixed with another gas forms a homogeneous mixture and hence is not a colloidal system. The examples of the various types of colloids along with their typical names are listed in Table 5.4.”
Types of Colloidal Systems (rows)
| Dispersed phase | Dispersion medium | Type of colloid | Examples |
|---|---|---|---|
| Solid | Liquid | Sol | Paints, cell fluids |
| Liquid | Solid | Gel | Cheese, butter, jellies |
| Liquid | Gas | Aerosol | Fog, mist, cloud, insecticide sprays |
| Gas | Liquid | Foam | Froth, whipped cream, soap lather |