Discussion
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- Question
Rayon is a __________ fibre.
Options- A. cellulosic
- B. polyamide
- C. polyester
- D. natural
- Correct Answer
- cellulosic
- 1. Collapsible tubes for tooth paste are produced by __________ extrusion.
Options- A. direct
- B. indirect
- C. impact
- D. none of these Discuss
- 2. Softening point of high density polythene is about __________ °C.
Options- A. 85
- B. 135
- C. 165
- D. 205 Discuss
- 3. 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
- 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
- 5. 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
- 6. 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
- 7. The only natural thermoplastic resin, which is a product of animal life is
Options- A. rosin
- B. shellac
- C. amber
- D. copal Discuss
- 8. Rain coats are made of
Options- A. neoprene
- B. PVC
- C. polyurathane
- D. SBR Discuss
- 9. Styrene butadiene rubber is commercially manufactured by
Options- A. bulk polymerisation
- B. suspension polymerisation
- C. solution polymerisation
- D. emulsion polymerisation Discuss
- 10. Pickout the wrong statement.
Options- A. Polymers made of only one monomer is called homopolymer.
- B. Polymers made of more than one monomer is called copolymer or mixed polymer.
- C. Vulcanised rubber is more elastic than natural rubber.
- D. The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres. Discuss
Polymer Technology problems
Search Results
Correct Answer: impact
Correct Answer: 135
Correct Answer: thermosetting
Correct Answer: dibasic acid with dihydric alcohol.
Correct Answer: either (b) or (c)
Correct Answer: polyamide
Correct Answer: shellac
Correct Answer: PVC
Correct Answer: emulsion polymerisation
Correct Answer: Polymers made of only one monomer is called homopolymer.
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