Increasing order of intermolecular forces for Nylon - 6, 6, Buna-S, Polythene is-

1. Buna-S > Polythene > Nylon- 6,6

2. Buna-S < Polythene < Nylon- 6,6

3. Buna-S < Nylon- 6,6 < Polythene

4. Nylon-6,6 < Buna-S < Polythene

 Monomers of Dacron polymer is: 

1. Ethylene glycol and terephthalic acid

2. Ethylene oxide and  phthalic acid

3. Ethylene glycol and benzoic acid

4. Benzamide and terephthalic acid

Classify the polymers into addition and condensation polymers: Terylene, Bakelite, Polyvinyl chloride, Polythene. 

The difference between Buna-N and Buna-S is :

On the basis of molecular forces, polymer can be classified as -

1. Elastomers

2. Fibres

3. Thermoplastic polymers 

4. All of the above

The term copolymerization means formation of polymer from : 

1. The same monomer.

2. Two or more different monomers.

3. Acid and base.

4. Elastomer.

The examples of thermoplastics and thermosetting polymers are respectively :

The presence of double bonds in rubber molecules increase -

1. Viscosity 

2. Elasticity

3. Surface Tension

4. Vapour pressure

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.

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.