Match List I with List II
| LIST I | LIST II |
| A. Multimolecular colloids | I. Nitro cellulose |
| B. Macromolecular Colloids | II. Sulphur molecule |
| C. Associated colloids | III. Nylon |
| D. Collodion | IV. Soaps |
Choose the correct answers from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → A-II, B-III, C-IV, D-I
Colloids are classified by the kind of particles of the dispersed phase.
(A) Multimolecular colloids — This matches (II) Sulphur molecule. A sulphur sol has particles made of a thousand or more \( \ce{S8} \) molecules held together.
(B) Macromolecular colloids — This matches (III) Nylon. Single giant molecules (polythene, nylon, starch, proteins) are themselves of colloidal size.
(C) Associated colloids — This matches (IV) Soaps. Soap ions behave as normal electrolytes at low concentration and form micelles above the CMC.
(D) Collodion — This matches (I) Nitro cellulose. Collodion is a 4% solution of nitrocellulose in a mixture of alcohol and ether, used to make ultrafilter papers.
Shortcut: (A)-(II) leaves Options (1) and (2); (B)-(III) 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.