High molecular mass macromolecules are called polymers which consist of repeating structural units derived from corresponding monomers. These polymers can be classified in a number of ways, such as based on their source, method of preparation intermolecular forces of attraction etc.
Natural rubber is a polymer of cis-1, 4-isoprene and can be made tough with vulcanisation process. Polymers are useful in manufacturing of various materials such as toys, fibres, pipes, television cabinets etc.
In view of potential environmental hazards of waste disposal certain biodegradable polymers are synthesised such as PHBV.
Based on the paragraph given above answer the questions
Match List I with List II.
| LIST I | LIST II |
| A. Bakelite | I. 1, 3-butadiene + Acrylonitrile |
| B. Glyptal | II. Glycine + Amino caproic acid |
| C. Nylon-2-Nylon-6 | III. Ethylene glycol + phthalic acid |
| D. Buna-N | IV. Phenol + formaldehyde |
Choose the correct answer from the options given below :
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → (A)-(IV), (B)-(III), (C)-(II), (D)-(I)
A. Bakelite — This matches IV. Phenol + formaldehyde. A condensation polymer; novolac cross links to bakelite on heating with formaldehyde.
B. Glyptal — This matches III. Ethylene glycol + phthalic acid. A polyester.
C. Nylon-2-Nylon-6 — This matches II. Glycine + Amino caproic acid. An alternating polyamide copolymer, biodegradable.
D. Buna-N — This matches I. 1, 3-butadiene + Acrylonitrile. A synthetic rubber.
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.