Match List-I with List-II.
| List-I | List-II |
| A. Gem stone | I. Emulsion |
| B. Milk | II. Solid sol |
| C. Cloud | III. Foam |
| D. Froth | IV. Aerosol |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-II, B-I, C-IV, D-III
A. Gem stone — This matches II. Solid sol. A solid dispersed in a solid (coloured glasses, gem stones).
B. Milk — This matches I. Emulsion. Liquid fat dispersed in water, a liquid in a liquid.
C. Cloud — This matches IV. Aerosol. Liquid droplets dispersed in a gas (air).
D. Froth — This matches III. Foam. A gas dispersed in a liquid.
Shortcut: The pair A-II appears in Options (2) and (3), and B-I then leaves only Option (2).
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 – …
