Which of the following compounds does not undergo vinyl polymerization?

The correct functional group $X$ and the reagent/reaction conditions $Y$ in the following scheme are:
$X-(CH_2)_4-X \xrightarrow{Y} \text{condensation polymer}$
$(i) \text{ with } HOOC-(CH_2)_4-COOH / \text{heat}$
$(A) X = COOCH_3, Y = H_2 / Ni / \text{heat}$
$(B) X = CONH_2, Y = H_2 / Ni / \text{heat}$
$(C) X = CONH_2, Y = Br_2 / NaOH$
$(D) X = CN, Y = H_2 / Ni / \text{heat}$

The polymer formed by the condensation polymerization of ethylene glycol and phthalic acid is known as:

Triethyl aluminium and titanium chloride,used in the plastic industry,is a

Teflon is a polymer of

Polythene is a resin obtained by the polymerization of which monomer?