Polymer Technology problems
- 1. The starting material used for the manufacture of caprolactum is
Options- A. ethyl benzene
- B. cyclohexane
- C. ethylene glycol
- D. DMT Discuss
Correct Answer: cyclohexane
- 2. __________ is a copolymer.
Options- A. styrene butadiene rubber (SBR)
- B. Neoprene
- C. PVC
- D. None of these Discuss
Correct Answer: styrene butadiene rubber (SBR)
- 3. Thermocole is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten
Options- A. saturated polyester
- B. polyurathane
- C. polystyrene
- D. either (b) or (c) Discuss
Correct Answer: either (b) or (c)
- 4. Polyesters are manufactured by the polycondensation reaction of
Options- A. dibasic acid with dihydric alcohol.
- B. a single monomer.
- C. carboxylic acid with ethylene.
- D. inorganic acid with ethylene glycol. Discuss
Correct Answer: dibasic acid with dihydric alcohol.
- 5. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
Options- A. thermoplastic
- B. thermosetting
- C. linear
- D. glass like transparent Discuss
Correct Answer: thermosetting
- 6. Softening point of high density polythene is about __________ °C.
Options- A. 85
- B. 135
- C. 165
- D. 205 Discuss
Correct Answer: 135
- 7. Collapsible tubes for tooth paste are produced by __________ extrusion.
Options- A. direct
- B. indirect
- C. impact
- D. none of these Discuss
Correct Answer: impact
- 8. Rayon is a __________ fibre.
Options- A. cellulosic
- B. polyamide
- C. polyester
- D. natural Discuss
Correct Answer: cellulosic
- 9. Nylon 6, 10 which is used for bristles making is superior to nylon 6, 6 due to its lower water absorption capacity, is a/an
Options- A. polyester
- B. polyamide
- C. polyisoprene
- D. polystyrene Discuss
Correct Answer: polyamide
- 10. The only natural thermoplastic resin, which is a product of animal life is
Options- A. rosin
- B. shellac
- C. amber
- D. copal Discuss
Correct Answer: shellac
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