Among the following, the monomers which give the polymer neoprene on polymerization are:

1. CH2 = CHCl
2. CCl2 = CCl2
3.
4. CF2 = CF2

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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AIPMT - 2003
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Polymers are examples of

1. High molecular mass macromolecules, which consist of non-repeating structural units derived from monomers

2. How molecular mass macromolecules, which consist of non-repeating structural units derived from monomers

3. High molecular mass macromolecules, which consist of repeating structural units derived from monomers

4. Low molecular mass macromolecules, which consist of repeating structural units derived from monomers

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
 86%
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Classification of polymers on the basis of structure include-

1. Linear polymers

2. Branched-chain polymers

3. Cross-linked or Network polymers

4. All of these

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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The names of monomers of the following polymers are respectively -

1) Hexaethylenediamine, Caprolactum, Tetrafluoroethene

2) Hexamethylenediamine, Caprolactum, Tetrafluoroethyne

3) Hexamethylenediamine, Caprolactum, Tetrafluoroethene

4) Hexaethylenediamine, Caprolactum, Tetrafluoroethane

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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Classify the polymers into addition and condensation polymers: Terylene, Bakelite, Polyvinyl chloride, Polythene. 

1. Addition polymers: Terylene, bakelite; Condensation polymers: Polyvinyl chloride, polythene
2. Addition polymers: bakelite; Condensation polymers: Terylene, bakelite, Polyvinylchloride, polythene
3. Addition polymers: polythene; Condensation polymers: Terylene, bakelite, Polyvinylchloride
4. Addition polymers: Polyvinyl chloride, polythene; Condensation polymers: Terylene, bakelite

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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The difference between Buna-N and Buna-S is :

1. Buna-N is a copolymer of 3−butyne, and acrylonitrile while Buna-S is a copolymer of 3−butyne, and styrene.
2. Buna-S is a copolymer of 3−butyne, and acrylonitrile while Buna-N is a copolymer of 3−butyne, and styrene.
3. Buna-N is a copolymer of 1,3−butadiene, and acrylonitrile while Buna-S is a copolymer of 1, 3−butadiene, and styrene.
4. Buna-S is a copolymer of 1,3−butadiene, and acrylonitrile while Buna-N is a copolymer of 1, 3−butadiene, and styrene.

Subtopic:  Polymers: Natural & Synthetic, Biodegradable & Non Biodegradable |
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On the basis of molecular forces, polymer can be classified as -

1. Elastomers

2. Fibres

3. Thermoplastic polymers 

4. All of the above

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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The term copolymerization means formation of polymer from : 

1. The same monomer.

2. Two or more different monomers.

3. Acid and base.

4. Elastomer.

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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The examples of thermoplastics and thermosetting polymers are respectively :

1. Thermoplastics:polythene, urea-formaldehyde resins ; Thermosetting : bakelite, polystyrene
2. Thermoplastics: bakelite, polystyrene; Thermosetting : polythene, urea-formaldehyde res
3. Thermoplastics:polythene, polystyrene ; Thermosetting : bakelite, urea-formaldehyde resins
4. Thermoplastics:bakelite, urea-formaldehyde resins ; Thermosetting : polythene, polystyrene

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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The monomers used for getting the following polymers are respectively -

 (i) Teflon (ii) Bakelite

1. i = Formaldehyde (HCHO) and phenol; ii = Vinyl chloride

2. i = Tetrafluoroethylene; and ii = Vinyl chloride

3. i = Vinyl chloride; ii = Formaldehyde (HCHO), and phenol

4. i = Tetrafluoroethylene; ii = Formaldehyde (HCHO) and phenol

Subtopic:  Classification - Methods of Polymerization & Copolymerization |
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