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

1. Galvanization.

2. Vulcanization.

3. Bessemerization.

4. Sulphonation.

Melamine plastic crockery is a copolymer of:

1. HCHO and melamine.

2. HCHO and ethylene.

3. Melamine and ethylene.

4. None of the above.

Polyamide is represented by: 

1. Teflon 

2. Nylon – 6,6

3. Terylene 

4. Bakelite

The polymer that is not prepared by condensation process is: 

1. Melamine

2. Glyptal

3. Dacron

4. Neoprene

Buna-S is a synthetic copolymer of:

1. Styrene and buta-1,3-diene.

2. Styrene and ethylene.

3. 1,3-Butadiene and ethylene.

4. None of the above.

Natural rubber is a polymer of :-

1. Isoprene

2. Styrene

3. Ethylene

4. Butadiene

Polymer that is used to make non stick cookware is: 

1. PVC

2. Polysterene

3. Polyethylene

4. PTFE

Terylene is a:

1. Polyamide                     

2. Polyester

3. Polyether                       

4. Long chain hydrocarbon

The monomer units of PTFE are:

1. Cl₂CH-CH₃

2. F₂C=CF₂

3. F₃C-CF₃

4. FClC=CF₂

The catalyst used in the manufacture of polythene by Ziegler method is:
1. Titanium tetrachloride and triphenyl galium 
2. Titanium tetrachloride and triethyl aluminium
3. Titanium dioxide
4. Titanium isopropoxide