Which of the following is a synthetic polymer?

1. Phenol-formaldehyde resin.

2. Proteins.

3. Polysaccharides.

4. Natural rubber.

Bakelite is produced by : 

1. Phenol, methanol

2. Phenol, NaOH

3. Phenol, urea

4. Phenol, formaldehyde

Treatment of rubber with sulfur -

(1) Annealing.

(2) Vulcanization.

(3) Quenching.

(4) None of the above.

Teflon, polystyrene, and neoprene are all -

1. Monomers.

2. Co-polymers.

3. Homopolymers.

4. Condensation polymers.

Polymer that contains isoprene units is : 

(1) Natural rubber

(2) Nylon-6, 6

(3) Polyethylene

(4) Dacron

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

A polymer of methylene chloride and sodium polysulfide is?

(1) Thiokol

(2) Melamine

(3) Glyptal

(4) Perlon L

Which of the following is not made of polyamides?

(1) nylon

(2) natural silk

(3) wool

(4) artificial silk

The synthetic polymer prepared from caprolactam is known as -

(1) Teflon

(2) Nylon-6

(3) Nylon-610

(4) Terylene