${\mathrm{F}}_2\mathrm{C}$ $=$ ${\mathrm{CF}}_2$ is a monomer of -

1. Teflon

2. Glyptal

3. Nylon-6

4. Buna-S

Dacron is a polymer of : 

1. Propylene and para HO—(C₆H₄)—OH

2. Benzoic acid and ethanol

3. Terephthalic acid and ethylene glycol

4. Benzoic acid and para HO—(C₆H₄)—OH

The purpose of vulcanization of rubber is/are -

1. To maintain the elasticity of natural rubber.

2. To improve the tensile strength of natural rubber.

3. To use for a wide range of temperatures.

4. All of the above.

Condensation of caprolactam gives:

1. Nylon-6,6               

2. Nylon-6

3. Nitrile rubber         

4. Nylon-6,10

Natural rubber has:

1. All trans-configuration
2. Alternate cis - and trans-configuration
3. Random cis - and trans-configuration
4. All cis-configuration

Natural rubber is a polymer of :-

1. Isoprene

2. Styrene

3. Ethylene

4. Butadiene

The salient feature of biodegradable polymer is:

1. Polymer that can be decomposed.

2. Polymer that cannot be decomposed.

3. Polymer that can be denatured.

4. Polymer that cannot be denatured.

Which of the following is a synthetic polymer?

1. Phenol-formaldehyde resin.

2. Proteins.

3. Polysaccharides.

4. Natural rubber.

Match the polymers given in Column I with their commercial names given in Column II.

Codes

Match the polymer of Column I with the correct monomer of Column II

Codes