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