Discussion
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- Question
__________ tubes are good substitude for human blood vessels onrheart by-pass operation.
Options- A. PVC
- B. Polythene
- C. Teflon/dacron
- D. Polystyrene
- Correct Answer
- Teflon/dacron
- 1. Fillers such as zinc oxide and carbon black are added to the crude natural rubber before vulcanisation in order to improve its
Options- A. elasticity
- B. strength
- C. plasticity
- D. weathering characteristics Discuss
- 2. Caprolactum, a raw material for the manufacture of nylon-6, is produced from
Options- A. phenol
- B. naphthalene
- C. benzene
- D. pyridine Discuss
- 3. Trade name of __________ is neoprene.
Options- A. polychloroprene
- B. polyisoprene
- C. polytetraflouroethylene
- D. poly vinyl acetate Discuss
- 4. Mastication of rubber means
Options- A. its softening.
- B. a treatment to retard its deterioration due to oxidation.
- C. improving its curing rate.
- D. depression of its freezing point. Discuss
- 5. Cellulose is the main contituent of most __________ fibres.
Options- A. acrylic
- B. spandex
- C. synthetic
- D. natural Discuss
- 6. Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is
Options- A. chloroethane
- B. chlorophrene
- C. isoprene
- D. none of these Discuss
- 7. Thiokol is nothing but
Options- A. polysulphide rubber
- B. polyamide fibre
- C. engineering plastic
- D. exponded polystyrene Discuss
- 8. Dacron is a/an
Options- A. polyester
- B. unsaturated polyester
- C. polyamide
- D. inorganic polymer Discuss
- 9. Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
Options- A. nitrile
- B. silicone
- C. neoprene
- D. butyl Discuss
- 10. SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at
Options- A. 1:3
- B. 3:1
- C. 1:2
- D. 2:1 Discuss
Polymer Technology problems
Search Results
Correct Answer: weathering characteristics
Correct Answer: benzene
Correct Answer: polychloroprene
Correct Answer: its softening.
Correct Answer: natural
Correct Answer: chlorophrene
Correct Answer: polysulphide rubber
Correct Answer: polyester
Correct Answer: butyl
Correct Answer: 1:3
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