Polymer Technology problems
- 1. Dacron (or terylene) fibres as compared to nylon fibres have
Options- A. better heat & acid resistant properties.
- B. poorer resistance to alkalis.
- C. poorer dyeability.
- D. all (a), (b) and (c). Discuss
Correct Answer: all (a), (b) and (c).
- 2. Neoprene is the trade name of
Options- A. polyurethane
- B. phenol formaldehyde
- C. polychlorophrene
- D. styrene butadiene rubber (SBR) Discuss
Correct Answer: polychlorophrene
- 3. Polymethyl methacrylate (PMMA) is known as
Options- A. bakelite
- B. teflon
- C. perspex
- D. nylon-6 Discuss
Correct Answer: perspex
- 4. __________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine.
Options- A. Epoxy
- B. Amino
- C. Alkyd
- D. Phenolic Discuss
Correct Answer: Amino
- 5. Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces
Options- A. nylon-6
- B. dacron
- C. polyester
- D. PVC Discuss
Correct Answer: dacron
- 6. Neoprene is chemically known as
Options- A. polybutandiene
- B. styrene butadiene rubber (SBR)
- C. polyurethane
- D. poly chloroprene Discuss
Correct Answer: poly chloroprene
- 7. The monomer of poly vinyl chloride (PVC) is
Options- A. chloroethene
- B. ethylene dichloride
- C. ethyl chloride
- D. chloroform Discuss
Correct Answer: chloroethene
- 8. Celluloid is
Options- A. cellulose acetate
- B. regenerated cellulose
- C. cellulose nitrate
- D. cellulose acetate butyrate Discuss
Correct Answer: cellulose nitrate
- 9. Plasticisers are added to synthetic plastics to
Options- A. impart flexibility.
- B. improve workability during fabrication.
- C. develop new improved properties not present in the original resin.
- D. all (a), (b) and (c). Discuss
Correct Answer: all (a), (b) and (c).
- 10. Which of the following polymers has the tendency of decomposing before melting?
Options- A. Polystyrene
- B. Nylon
- C. PVC
- D. None of these Discuss
Correct Answer: PVC
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