A) Nylon-6
B) Nylon-6 6
C) Terylene (dacron)
D) Buna-S
Correct Answer: D
Solution :
Buna-S is an addition copolymer. The reaction is as follows: \[\underset{Buta-\text{ }1,\text{ }3-diene\text{ }\left( 75% \right)}{\mathop{nC{{H}_{2}}=CH-CH=C{{H}_{2}}}}\,+n\,\underset{\begin{smallmatrix} | \\ {{C}_{2}}{{H}_{6}} \end{smallmatrix}}{\mathop{C}}\,=C{{H}_{2}}\]
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