Which of the following is an addition polymer?

Terylene

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Glyptals

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SBR

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Nylon

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Solution

The correct option is C SBR
SBR $\to$ styrene-butadiene rubber
Addition polymer : (Chain growth polymerisation)
$\to$ Formed by the repeated addition of monomer molecules
$\to$ Without elimination of anything.
Ex. PVC, Polystyrene, Teflon, Buna-S(SBR) etc.
Condensation polymers: (Step growth polymerisation)
In these polymerisation reaction, the elimination of small molecules such as water, alcohol, hydrogen chloride take place.
Ex. Dacron/Terylene (polyester), Nylon (Polyamide), Glyptals etc.

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