The chemical name of 'Melamine' is:

1. l, 3, 5-Triamine-2, 4, 6-triazine

2. 2, 4, 6-Triamine-l, 3, 5-triazine

3. 2-Amino-l, 3, 5-triazine

4. 2, 4-Diamino-l, 3, 5-triazine

Peroxide initiated polymerizations occur via -

1. Hydrocarbon combustion 

2. Natural process synthesis

3. Isomeric saponification

4. Free radical chain propagation

Which of the following statèment is incorrect?

(1) Vinyon is a copolymer of vinyl chloride and vinyl acetate

(2) Saran is a copolymer of vinyl chloride and vinylidene chloride

(3) Butyl rubber is a copolymer of isobutylene and isoprene

1.  1 and 2

2.  2 only

3.  1 only

4.  none is incorrect

The thermoplastic polymer among the following is -

1. Bakelite

2. Urea-formaldehyde resin

3. PVC

4. Melamine-formaldehyde resin

Latex can be coagulated with?

(1) ${\mathrm{CH}}_2\mathrm{COOH}$

(2) ${\mathrm{H}}_2\mathrm{O}$

(3) ${\mathrm{CH}}_3\mathrm{OH}$

(4) All of these

Which one of the following pairs is not correctly matched?

(1) Teflon: Thermally stable cross-linked polymer of phenol and formaldehyde

(2) Synthetic rubber: A copolymer of butadiene and styrene

(3) Terylene: Condensation polymer of terephthalic acid and ethylene glycol

(4) Perspex: A homopolymer of methyl methacrylate

In a polymer sample, 30% of molecules have a molecular mass of 20,000, 40% have 30,000, and the rest- 60,000. What is the weight average molecular mass= of the polymer?

(1) 40,300

(2) 30,600

(3) 43,333

(4) 50,400

Which of the following are correct here?

(1) ABS plastic

(2) Contains three monomers

(3) A polymer of acrylonitrile, butadiene, and styrene

1. 1 and 2

2. 3 only

3.  2 only

4.  1, 2, and 3

Which is/are correct about PMMA here

(I) It is called plexiglass
(II) It is hard and transparent
(III) For its formation peroxide is used
(IV) It is co-polymer

(1) I, II

(2) II, III

(3) 1, IIl

(4) I, II, III, IV

Polyacrylonitrile, characterized by the  repeating unit is made from the monomer: 

1. ${\mathrm{CH}}_2=\mathrm{CHCN}$

2. ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CN}$

3. ${\mathrm{HOCH}}_2{\mathrm{CH}}_2{\mathrm{CH}}_3$

4. ${\mathrm{CH}}_3\mathrm{CH}=\mathrm{CHCN}$