Match List I with List II.
List I (Monomer Unit):
(a) Caprolactum
(b) 2-Chloro-1,3-butadiene
(c) Isoprene
(d) Acrylonitrile
List II (Polymer):
(i) Natural rubber
(ii) Buna- N
(iii) Nylon 6
(iv) Neoprene
Choose the correct answer from the options given below :
List I (Monomer Unit):
(a) Caprolactum
(b) 2-Chloro-1,3-butadiene
(c) Isoprene
(d) Acrylonitrile
List II (Polymer):
(i) Natural rubber
(ii) Buna- N
(iii) Nylon 6
(iv) Neoprene
Choose the correct answer from the options given below :
Answer: A → III, B → IV, C → I, D → II
Solution
The correct matching of monomers to their polymers:
(a) Caprolactum → (iii) Nylon 6
(b) 2-Chloro-1,3-butadiene → (iv) Neoprene
(c) Isoprene → (i) Natural rubber
(d) Acrylonitrile → (ii) Buna-N
Therefore, the correct matching is: (a)→(iii), (b)→(iv), (c)→(i), (d)→(ii)
(a) Caprolactum → (iii) Nylon 6
- Caprolactam (ε-caprolactam) undergoes ring-opening polymerization to form Nylon 6
- Structure: cyclic amide with 6 carbons
- Polymerization: (caprolactam) → [–NH–(CH₂)₅–CO–]ₙ
(b) 2-Chloro-1,3-butadiene → (iv) Neoprene
- 2-Chloro-1,3-butadiene (chloroprene) polymerizes to form neoprene (polychloroprene)
- Neoprene is a synthetic rubber with good chemical resistance
(c) Isoprene → (i) Natural rubber
- Isoprene (2-methyl-1,3-butadiene) is the monomer of natural rubber
- Natural rubber is cis-1,4-polyisoprene
- Found in latex from rubber trees
(d) Acrylonitrile → (ii) Buna-N
- Buna-N is a copolymer of 1,3-butadiene and acrylonitrile
- Also called nitrile rubber (NBR)
- Has good oil and fuel resistance
Therefore, the correct matching is: (a)→(iii), (b)→(iv), (c)→(i), (d)→(ii)
JEE Main · 2021 · 24 Feb 2021 · Shift 1 · Match the columns