Question 50

Match List I with List II

List I
(Example) List II
(Type)
A 2-chloro-1, 3-butadiene I Biodegradable polymer
B Nylon 2-nylon 6 II Synthetic Rubber
C Polyacrylonitrile III Polyester
D Dacron IV Addition Polymer

Choose the correct answer from the options given below:

	List I (Example)		List II (Type)
A	2-chloro-1, 3-butadiene	I	Biodegradable polymer
B	Nylon 2-nylon 6	II	Synthetic Rubber
C	Polyacrylonitrile	III	Polyester
D	Dacron	IV	Addition Polymer

Solution

Polymer Classification & Solution

Question: Match List I (Example) with List II (Type) and select the correct combination:

List I:
A. 2-chloro-1, 3-butadiene
B. Nylon 2-nylon 6
C. Polyacrylonitrile
D. Dacron

List II:
I. Biodegradable polymer
II. Synthetic Rubber
III. Polyester
IV. Addition Polymer

💡 Core Macromolecular Concepts:

Polymers are classified into categories based on their chemical composition, properties, mechanisms of formation, and environmental degradability.

Step-by-Step Matching Analysis:

A. 2-chloro-1, 3-butadiene → II (Synthetic Rubber)

Reason: 2-chloro-1,3-butadiene is commonly known as chloroprene. Upon polymerization, it yields polychloroprene, commercially referred to as Neoprene, which is a prominent example of an elastomer or synthetic rubber.

B. Nylon 2-nylon 6 → I (Biodegradable polymer)

Reason: Nylon 2-nylon 6 is an alternating polyamide copolymer synthesized from glycine and aminocaproic acid. It contains linkages that environmental microorganisms can easily digest, classifying it as a well-known biodegradable polymer.

C. Polyacrylonitrile → IV (Addition Polymer)

Reason: Polyacrylonitrile (PAN) forms via the peroxide-catalyzed chain-growth polymerization of acrylonitrile monomers without losing any small molecular byproducts. This characterizes it strictly as an addition polymer.

D. Dacron → III (Polyester)

Reason: Dacron (also known as Terylene) is created by the step-growth condensation polymerization of ethylene glycol and terephthalic acid, producing key ester bonds throughout its structural backbone.

Final Order Matching:

A → II, B → I, C → IV, D → III

Correct Option: B [A(II), B(I), C(IV), D(III)]

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Match List I with List II List I(Example)List II(Type)A2-chloro-1, 3-butadieneIBiodegradable polymerBNylon 2-nylon 6IISynthetic RubberCPolyacrylonitrileIIIPolyesterDDacronIVAddition Polymer Choose the correct answer from the options given below: