A) polyvinyl polymer
B) Polyester polymer
C) polyamide polymer
D) polyethylene polymer
Correct Answer: C
Solution :
Nylon threads are made up of polyamide. Some common examples are nylon 6 and nylon 66. Nylon\[{{H}_{2}}N-\underset{Monomer}{\mathop{{{(C{{H}_{2}})}_{5}}-}}\,COOH\] \[-NH-{{(C{{H}_{2}})}_{5}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH\underset{Polymer}{\mathop{-{{(C{{H}_{2}})}_{5}}}}\,-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH-\] Nylon\[HO-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-{{(C{{H}_{2}})}_{4}}COOH\] and \[{{H}_{2}}N-{{(C{{H}_{2}})}_{6}}-N{{H}_{2}}\]are monomers \[HN-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\underset{nylon-66\,\,(polymer)}{\mathop{{{(C{{H}_{2}})}_{4}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-NH}}\,-{{(C{{H}_{2}})}_{6}}-NH\] \[-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-{{(C{{H}_{2}})}_{4}}-\overset{\begin{smallmatrix} O \\ || \end{smallmatrix}}{\mathop{C}}\,-\]
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