Terylene is a condensation polymer of ethylene glycol and

(1) Benzoic acid

(2) Phthalic acid

(3) Salicylic acid

(4) Terephthalic acid

Melamine plastic crockery is a copolymer of:

1. HCHO and melamine

2. HCHO and ethylene

3. Melamine and ethylene

4. None of the above

The correct structure of acrilan is: 

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

Of the following which one is classified as polyester polymer ?

(1) Bakelite

(2) Melamine

(3) Nylon-66

(4) Terylene

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