Which of the following is an example of copolymer?

Buna-S

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PAN

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Polythene

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PTFE

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Solution

The correct option is A Buna-S
When two different types of monomers are joined in the same polymer chain, the polymer is called a copolymer. For example, Buna-S.

When a polymer is made by linking only one type of small molecules or monomers together, it is called a homopolymer.
For example, PAN, polythene, PTFE.

Option A is correct.

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