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 \[{{H}_{2}}N{{(\_\_C{{H}_{2}}\_\_)}_{5}}\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OH\]Monomer \[-HN{{(\_\_C{{H}_{2}}\_\_)}_{5}}\underbrace{\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NH}_{\text{amide}\,\text{linkage}}{{(\_\_C{{H}_{2}}\_\_)}_{5}}\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NH-\] Nylon-66 \[HO-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,{{(\_\_C{{H}_{2}}\_\_)}_{4}}-COOH\]and \[\underset{\text{Monomers}}{\mathop{{{H}_{2}}N{{(\_\_C{{H}_{2}}\_\_)}_{6}}-N{{H}_{2}}}}\,\] \[-HN-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,{{(\_\_C{{H}_{2}}\_\_)}_{4}}\underbrace{\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NH}_{\text{amide}\,\text{linkage}}{{(\_\_C{{H}_{2}}\_\_)}_{6}}\] \[NH-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,{{(\_\_C{{H}_{2}}\_\_)}_{4}}\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-\]
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