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Question 49

Match List-I with List-II :

(a) Chloroprene(i)  page9_img1
(b) Neoprene(ii) page9_img2
(c) Acrylonitrile(iii) page9_img3
(d) Isoprene(iv) CH$$_2$$=CH-CN

Choose the correct answer from the options given

Solution

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  • (a) Chloroprene $\rightarrow$ (ii): Chloroprene (2-chlorobuta-1,3-diene) is a monomer. Its structure consists of a diene backbone with a chlorine atom attached to the second carbon.
  • (b) Neoprene $\rightarrow$ (iii): Neoprene is the synthetic rubber polymer created from the polymerization of chloroprene. You can easily identify it as the polymer because of the brackets and the subscript "n" indicating repeating units:

    $$(-CH_2-C(Cl)=CH-CH_2-)_n$

  • (c) Acrylonitrile $\rightarrow$ (iv): Acrylonitrile is an organic monomer consisting of a vinyl group linked to a nitrile group. Its chemical formula is given directly a $$CH_2=CH-CN$$.
  • (d) Isoprene $\rightarrow$ (i): Isoprene (2-methylbuta-1,3-diene) is the monomer that makes up natural rubber. Its structure is identical to chloroprene, but with a methyl group ($$-CH_3$$) in place of the chlorine atom.

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