Match List I with List II:
| List I | List II |
| (A) Gel | (I) Hair cream |
| (B) Foam | (II) Dust |
| (C) Emulsion | (III) Cheese |
| (D) Aerosol | (IV) Whipped cream |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A)-(III), (B)-(IV), (C)-(I), (D)-(II)
(A) Gel — This matches (III) Cheese. A gel is a liquid dispersed in a solid.
(B) Foam — This matches (IV) Whipped cream. A foam is a gas dispersed in a liquid.
(C) Emulsion — This matches (I) Hair cream. An emulsion is a liquid dispersed in a liquid.
(D) Aerosol — This matches (II) Dust. Dust is a solid dispersed in a gas.
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 (rows of Table 5.4)
| Dispersed phase | Dispersion medium | Type of colloid | Examples |
|---|---|---|---|
| Solid | Gas | Aerosol | Smoke, dust |
| Liquid | Solid | Gel | Cheese, butter, jellies |
| Liquid | Liquid | Emulsion | Milk, hair cream |
| Gas | Liquid | Foam | Froth, whipped cream, soap lather |