On the basis of mode of formation, polymers can be classified as:
1. Addition polymers only.
2. Condensation polymers only.
3. Co-polymers.
4. Both addition and condensation polymers.

Low-density polythene is prepared by -

1. Free-radical polymerization.

2. Cationic polymerization.

3. Anionic polymerization.

4. Ziegler-Natta polymerization.

Which of the following is a synthetic polymer?

1. Phenol-formaldehyde resin.

2. Proteins.

3. Polysaccharides.

4. Natural rubber.

Teflon, polystyrene, and neoprene are all -

1. Monomers.

2. Co-polymers.

3. Homopolymers.

4. Condensation polymers.

PVC as obtained after polymerization is -

1. Soft and pliable.

2. Hard, brittle, and transparent.

3. Hard and infusible.

4. None of the above.

The compound used in the manufacture of terylene is: 

1. Ethylene

2. Vinyl chloride

3. Ethylene glycol

4. Adipic acid

Polymer that is used to make nonstick cookware is: 

1. PVC

2. Polystyrene

3. Polythene (terephthalate)

4. Polytetrafluoroethylene

The copolymer from the given options is-

1. Nylon 6, 6

2. Polyethylene

3. PMMA

4. Nylon-6

${\mathrm{F}}_2\mathrm{C}$ $=$ ${\mathrm{CF}}_2$ is a monomer of -

1. Teflon

2. Glyptal

3. Nylon-6

4. Buna-S

Orlon has a unit of -

1. Glycol

2. Isoprene

3. Vinyl cyanide

4. Acrolein