Among the following, the correct statement(s) about polymers is(are)
Select ALL correct options:
A
The polymerization of chloroprene gives natural rubber.
B
Teflon is prepared from tetrafluoroethene by heating it with persulphate catalyst at high pressure.
C
PVC are thermophlastic plymers.
D
Ethene at $350-570 \mathrm{~K}$ temperature and $1000-2000 \mathrm{~atm}$ pressure in the presenece of a peroxide initiator yields high density polythene.
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