Polymers of Commercial Importance

Teflon is obtained by the polymerisation of:

Acrilan is a hard, sharp and a high melting material. Which of the following represents its structure?

PVC is used for manufacturing of

The total number of delocalized lone pairs of electrons in melamine is:

Bullet proof vests are made up of?

Which of the following polymers is synthesized using a free radical polymerisation technique?

${\mathrm{CaC}}_2+2{\mathrm{H}}_2\mathrm{O} \to \mathrm{Ca}(\mathrm{OH}{)}_2+\mathrm{CH}\equiv \mathrm{CH}$

$$\begin{gathered} {\mathrm{C}}_2{\mathrm{H}}_2+{\mathrm{H}}_2\stackrel{\mathrm{Pd}-{\mathrm{BaSO}}_4}{\to } {\mathrm{CH}}_2={\mathrm{CH}}_2 \\ \mathrm{n} {\mathrm{CH}}_2={\mathrm{CH}}_2\stackrel{}{\to }{\sout{(}{\mathrm{CH}}_2-{\mathrm{CH}}_2\sout{)}}_{\mathrm{n}}\text{(polyethylene)} \end{gathered}$$

What is the amount of polyethylene formed from $20 \mathrm{Kg}$ of calcium carbide from the above reactions?

Formation of:

(a) dacron is a step-growth polymerisation

(b) polythene is a chain growth polymerisation in presence of benzyl peroxide

(c) polyacrylonitrile is chain growth polymerisation in presence of peroxide

$\mathrm{X}$ and $\mathrm{Y}$ are respectively:

Which of the following is a condensation polymer?

Natural rubber is a

Polyethylene is

The thermosetting plastic among the following is: