Q. No.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.
| 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 |
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. |
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 :
| 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 |
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.
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