Which of the following statements is incorrec | vedclass

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(C) $1$. Butyl rubber is a copolymer of isobutylene and a small amount of isoprene,and it is generally considered a linear or slightly branched elasto

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Dextron is a biodegradable polymer of the polyamide class.

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(C) $1$. Butyl rubber is a copolymer of isobutylene and a small amount of isoprene,and it is generally considered a linear or slightly branched elastomer.$2$. Dacron (also known as Terylene) is a copolymer formed by the condensation of ethylene glycol and terephthalic acid.$3$. Dextron (or Dextran) is a polysaccharide,not a polyamide. Polyamides are polymers containing amide linkages (e.g.,Nylon-$6$,$6$).$4$. Orlon is polyacrylonitrile,which is used as a substitute for wool in synthetic textiles.Therefore,the statement that Dextron is a biodegradable polyamide is incorrect.

Which of the following statements is incorrect?

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