Which of the following is a homopolymer?

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(A) $1$. $A$ homopolymer is a polymer formed from only one type of monomeric unit.$2$. Polyacrylonitrile is formed by the polymerization of acrylonitr

Vedclass · Accepted Answer

Polyacrylonitrile

Vedclass · Answer

(A) $1$. $A$ homopolymer is a polymer formed from only one type of monomeric unit.$2$. Polyacrylonitrile is formed by the polymerization of acrylonitrile $(CH_2=CH-CN)$ units only, hence it is a homopolymer.$3$. Buna-$N$ is a copolymer of $1,3$-butadiene and acrylonitrile.$4$. Urea formaldehyde resin is a copolymer of urea and formaldehyde.$5$. Polycarbonate is a copolymer formed from bisphenol-$A$ and phosgene.$6$. Therefore, Polyacrylonitrile is the correct answer.

List-$I$ (Polymer Type)	List-$II$ (Example)
$(A)$ Fibre	$(I)$ Bakelite
$(B)$ Elastomer	$(II)$ Polystyrene
$(C)$ Thermosetting polymer	$(III)$ Neoprene
$(D)$ Thermoplastic polymer	$(IV)$ Dacron

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Match the items in List-$I$ (Polymer Type) with the items in List-$II$ (Example):
List-$I$ (Polymer Type) List-$II$ (Example)
$(A)$ Fibre $(I)$ Bakelite
$(B)$ Elastomer $(II)$ Polystyrene
$(C)$ Thermosetting polymer $(III)$ Neoprene
$(D)$ Thermoplastic polymer $(IV)$ Dacron

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