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Q.

(A) Addition polymerisation is also known as step growth polymerisation.
(R) Addition polymers are always homopolymers.

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a

Both (A) and (R) are true and (R) is the correct explanation of (A)

b

Both (A) and (R) are true but (R) is not the correct explanation of (A)

c

(A) is true but (R) is false

d

Both (A) and (R) are false

answer is D.

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Detailed Solution

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  • In condensation polymerization, since each step produces a distinct functionalized species and is independent of each other, this process is also called as step growth polymerization.
  • It is possible to form copolymers through addition polymerization, which consist of two or more different types of monomers.
  • For instance, Buna–N is obtained by the copolymerization of 1, 3 – buta–1, 3–diene
    and acrylonitrile in the presence of a peroxide catalyst. 
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(A) Addition polymerisation is also known as step growth polymerisation.(R) Addition polymers are always homopolymers.