Which of the following is not a condensation | vedclass

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(C) Condensation polymers are formed by the repeated condensation reaction between two different bi-functional or tri-functional monomeric units,usual

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Buna-$S$

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(C) Condensation polymers are formed by the repeated condensation reaction between two different bi-functional or tri-functional monomeric units,usually involving the loss of small molecules like $H_2O$,$HCl$,or $NH_3$.$Dacron$ (Terylene) is a polyester formed by condensation of ethylene glycol and terephthalic acid.$Bakelite$ is a phenol-formaldehyde resin formed by condensation polymerization.$Starch$ is a natural polymer formed by the condensation of glucose units.$Buna-S$ is a synthetic rubber formed by addition polymerization of $1,3-butadiene$ and styrene. Therefore,it is an addition polymer,not a condensation polymer.

Which of the following is not a condensation polymer?

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