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NEET levelSingle correct optionDifficulty 1 of 3pl207

Teflon is obtained by the addition polymerisation of

A $CF X_{2} = CFCl$ (chlorotrifluoroethene)
B $CF X_{3} - CF X_{3}$ (hexafluoroethane)
C $CH X_{2} = CF X_{2}$ (1,1-difluoroethene)
D $CF X_{2} = CF X_{2}$ (tetrafluoroethene)

Answer: D

Teflon (PTFE) has the repeat unit

- [CF X_{2} - CF X_{2}] X_{n} X^{-}

, formed from tetrafluoroethene with a free radical initiator under pressure.

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