A) copolymer
B) addition polymer
C) thermosetting polymer
D) homopolymer
Correct Answer: A
Solution :
\[-[NH{{(CH)}_{2}}NHCO{{(C{{H}_{2}})}_{4}}CO]{{-}_{n}}\] is a copolymer because polymers whose repeating structural units are derived form two or more types of monomer units are called copolymer. \[n{{H}_{2}}N{{(C{{H}_{2}})}_{2}}N{{H}_{2}}+nHOOC{{(C{{H}_{2}})}_{4}}COOH\] \[\xrightarrow[-n{{H}_{2}}O]{Polymerisation}-[NH{{(C{{H}_{2}})}_{2}}NHCO{{(C{{H}_{2}})}_{4}}CO]{{-}_{n}}\]
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