Rubber is heated with sulphur and the process is known as:

1. Galvanization.

2. Vulcanization.

3. Bessemerization.

4. Sulphonation.

Which of the following is used to make non stick cookware ?

1. PVC

2. Polysterene

3. Polyethylene

4. PTFE

Buna-S is a synthetic copolymer of:

1. Styrene and 1,3-butadiene

2. Styrene and ethylene

3. 1,3-Butadiene and ethylene

4. None of the above

Gutta parcha rubber is:

1. A trans-1,4-polyisoprene polymer

2. A very hard material

3. A synthetic polymer

4. All of the above

Perspex or plexiglass is a polymer of-

1. Methyl methylacrylate

2. Methylacrylate

3. Acrylonitrile

4. None of the above

Glyptal is polymer of:

1. Ethylene glycol and phthalic acid

2. Ethylene and phthalic acid

3. Phthalic acid and acetylene

4. None of the above

Polymerisation of chloroethylene gives the polymer:

1. Polythene

2. PVC

3. Teflon

4. NPylon

Nylon-6, 10 is a polymer of:

1. Hexamethylene and adipic acid

2. Hexamethylene and sebacic acid

3. Caprolactam

4. None of the above

The polymer containing strong intermolecular forces, e.g., hydrogen bonding is:

1. Natural rubber

2. Teflon

3. Nylon-6,6

4. Polystyrene

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

1. ${\left(-{\mathrm{CH}}_2-\underset{{\mathrm{COOC}}_2{\mathrm{H}}_5}{\underset{|}{\mathrm{CH}}}-\right)}_n$

2. ${\left(-{\mathrm{CH}}_2-\underset{\mathrm{Cl}}{\underset{|}{\mathrm{CH}}}-\right)}_n$

3. ${\left(-{\mathrm{CH}}_2-\underset{\mathrm{CN}}{\underset{|}{\mathrm{CH}}}-\right)}_n$

4. ${\left(-{\mathrm{CH}}_2-\underset{{\mathrm{COOCH}}_3}{\underset{|}{\stackrel{{\mathrm{CH}}_3}{\stackrel{|}{\mathrm{C}}}}}-\right)}_n$