Question

Suppose A and B are two monomers.
Match the following types of Copolymers with their correct arrangements.

List - I List - II
(i) Random Copolymer 1) (A-A-A-A)-(B-B-B-B)-(A-A-A)

(ii) Block Copolymer 2) -A-B-A-B-A.

(iii) Graft Copolymer 3) -A-B-A-A-A-B-B-A-B-A-A-

B-B-B-B-
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(iv) Alternating Copolymer 4)-A-A-A-A-A-A-A-A-A-

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B-B-B-B-

• A. (i)-1, (ii)-2, (iii)-3, (iv)-4
• B. (i)-2, (ii)-4, (iii)-3, (iv)-1
• C. (i)-3, (ii)-1, (iii)-4, (iv)-2
• D. (i)-4, (ii)-3, (iii)-1, (iv)-2

Answer 1

Answer: (C)

(i)-3, (ii)-1, (iii)-4, (iv)-2

A) Random copolymer is that in which there is no specific arrangement of monomers, but it is formed by two or more than two monomers.
B) Block copolymer is (A-A-A-A)-(B-B-B-B)-(A-A-A-A)-, as the polymer is divided in subunits (blocks) of a single type of monomer.
C) Graft means branched copolymer.
D) Alternating copolymer is formed by only two monomeric units arranged alternatively.