Monomer of neoprene is: 

(1) 

(2) ${\mathrm{CF}}_2={\mathrm{CF}}_2$

(3) ${\mathrm{CH}}_2=\mathrm{CHCl}$

(4) ${\mathrm{CCl}}_2={\mathrm{CCl}}_2$

Monomer of  is 

(a) 2-methyl propene

(b) styrene

(c) propylene

(d) ethene

Polymerisation of chloroethylene gives the polymer:

1. Polythene

2. PVC

3. Teflon

4. Nylon

Glyptal is polymer of:

1. Ethylene glycol and phthalic acid

2. Eethylene and ohthalic acid

3. Phthalic acid and acetylene

4. None of the above

Example of addition polymer is:

(1) Buna-S

(2) Bakelite

(3) Nylon-6

(4) Dacron

Gutta parcha rubber is:

1. a trans-1,4-polyisoprene polymer

2. a very hard material

3. a natural polymer

4. all of the above

Which one of the following is an example of a thermosetting polymer ?

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.

Buna rubber is a polymer of:

(1) 1,3-btadiene

(2) vinyl acetate

(3) styrene

(4) none of these