Polythene and teflon are formed by polymerisation that is:
ACondensation
BSubstitution
CElimination
DAddition
Answer & Solution
Correct answer: D. Addition
1. These polymers grow by adding monomer to a chain.
2. The mechanism runs through free radicals.
3. So they are formed by addition polymerisation.
_Source: NCERT Class 12 Chemistry Part II, Chapter 15, Polymers._
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