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Home  >>  JEEMAIN and AIPMT  >>  Chemistry  >>  Polymers
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Butyl rubber has the monomer units

$\begin{array}{1 1}(a)\;\text{Isobutylene+Isoprene}\\(b)\; \text{Isobutylene+Butadiene}\\(c)\;\text{Butadiene+Isoprene}\\(d)\;\text{Isobutylene+Sodium polysulphide}\end{array}$

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Butyl rubber is a synthetic rubber,a copolymer of isobutylene with isoprene,thus called IIR (Isobutylene Isoprene Rubber)
Hence (a) is the correct answer.
answered Mar 11, 2014 by sreemathi.v
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