An example of elastomer among the following is: 

1. Dacron

2. Melamine

3. Vulcanized rubber

4. Polystyrene

Consider the following sequence of reactions.

The polymer (Y) is -

1. PVC

2. Saran

3. Neoprene

4. Chloroprene

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

The thermoplastic polymer among the following is -

1. Bakelite

2. Urea-formaldehyde resin

3. PVC

4. Melamine-formaldehyde resin

The reagent that is used for converting propylene to polypropylene is: 

1. TiCl₃ + K/THF

2. TiCl₄ + Al(C₂H₅)₃

3. TiCl₃ + (CH₃)₂Mg

4. TiCl₄ + CH₃(CH₂)₃Al

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

The monomer used for the manufacture of PVC is obtained by the addition of -

1. ${\mathrm{Cl}}_2$ to ethylene

2. ${\mathrm{Cl}}_2$ to acetylene

3. HCl to ethylene

4. HCl to acetylene in presence of ${\mathrm{Hg}}^{2+}$ salts

True statements regarding polymers are: 

a. Polymers have a low molecular weight.

b. Polymers have high viscosity.

c. Polymers scatter light.

d. Polymers do not carry any charge.

1. a, b and c

2. a, b and d

3. b, c and d

4. a, c and d

Perlon is also known as:

1. Nylon-6, 10

2. Nylon-4, 4

3. Nylon 6, 6, 6

4. Nylon-6