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Explore TopicChoose the Best Answer
A
A → B → D → C
B
C → D → B → A
C
A → D → B → C
D
B → A → C → D
Understanding the Answer
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Answer
The first step in Kevlar’s condensation polymerization is that the monomers react with each other to create dimers, a small pair of linked molecules. After the dimers form, small molecules such as water or ammonia are eliminated from the reaction mixture. These dimers then link together, forming longer chains. As more dimers join, long chain polymers emerge, creating the high‑strength Kevlar fiber. For example, two terephthaldehyde and two p‑phenylenediamine molecules combine, lose water, and repeat this process until a long, rigid polymer chain is built.
Detailed Explanation
First, the two building blocks called monomers join to make a dimer. Other options are incorrect because This answer puts the chain‑forming step after the elimination step; This choice starts with the finished polymer, which cannot happen first.
Key Concepts
Condensation Polymerization
Polymer Formation
Elimination Reactions
Topic
Condensation Polymerization
Difficulty
medium level question
Cognitive Level
understand
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