Discussion
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- Question
Which of the following is the lowest cost plastic commercially available?
Options- A. Polythene
- B. Teflon
- C. Bakelite
- D. PVC
- Correct Answer
- Polythene
- 1. Most of the fibre forming polymers are crystalline in nature, one of the exceptions being __________ which is amorphous in nature.
Options- A. nylon
- B. polyacrylonitrile
- C. polypropylene
- D. polyester Discuss
- 2. Phenol formaldehyde
Options- A. employs addition polymerisation.
- B. employs condensation polymerisation.
- C. is a monomer.
- D. is an abrasive material. Discuss
- 3. Thermosetting materials
Options- A. are cross-linked molecules.
- B. soften on application of heat.
- C. are solvent soluble.
- D. none of these. Discuss
- 4. A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of
Options- A. siloxane elastomers.
- B. polyamides.
- C. vinyl polymers.
- D. urea-formaldehyde resins. Discuss
- 5. Nylon-6 is a
Options- A. polyamide
- B. thermosetting resin
- C. polyester
- D. none of these Discuss
- 6. Polymerisation of poly functional monomers produces polymers having
Options- A. good machanical strength
- B. low viscosity
- C. low melting point
- D. none of these Discuss
- 7. Branched chain polymers compared to linear polymers have higher
Options- A. density.
- B. tensile strength.
- C. melting point.
- D. degree of irregularity in atomic packing. Discuss
- 8. Polyurathane can not be used to make
Options- A. automobile cushion
- B. thermal insulation in refrigerator
- C. coating and adhesive
- D. fibre reinforced plastic (FRP) Discuss
- 9. __________ practically possess no elasticity.
Options- A. Vulcanite or ebonite
- B. Spandex fibre
- C. Polysulphide rubber
- D. Epoxy resin Discuss
- 10. Rexin (also called artificial leather), which is used for making table cover, automobile seat cover, shoes etc. is made by coating thick cloth with molten
Options- A. teflon
- B. bakelite
- C. SBR
- D. PVC Discuss
Polymer Technology problems
Search Results
Correct Answer: polyacrylonitrile
Correct Answer: employs condensation polymerisation.
Correct Answer: are cross-linked molecules.
Correct Answer: urea-formaldehyde resins.
Correct Answer: polyamide
Correct Answer: good machanical strength
Correct Answer: degree of irregularity in atomic packing.
Correct Answer: fibre reinforced plastic (FRP)
Correct Answer: Vulcanite or ebonite
Correct Answer: PVC
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