Polymer Technology problems
- 1. Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%)?
Options- A. Water impermeable cellophane
- B. Polythene
- C. Cellulose acetate
- D. Teflon Discuss
Correct Answer: Polythene
- 2. Maximum consumption of polymers is in
Options- A. electrical insulation
- B. toys making
- C. coating and films
- D. packaging Discuss
Correct Answer: coating and films
- 3. Rayon is superior to cotton in making gauge for wound treatment, because rayon
Options- A. is a synthetic polymer.
- B. does not stick to the wound unlike cotton.
- C. can absorb over 90% of its own weight of water.
- D. both (b) and (c). Discuss
Correct Answer: does not stick to the wound unlike cotton.
- 4. Polycaprolactum is nothing but
Options- A. orlon
- B. nylon 6, 6
- C. nylon 6
- D. saran Discuss
Correct Answer: nylon 6
- 5. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
Options- A. teflon
- B. bakelite
- C. polyester
- D. nylon-66 Discuss
Correct Answer: bakelite
- 6. Which of the following is a natural polyamide fibre.
Options- A. Wool
- B. Silk
- C. Cotton
- D. None of these Discuss
Correct Answer: Wool
- 7. Most commonly used rubber vulcanisation agent is
Options- A. sulphur
- B. bromine
- C. platinum
- D. alumina Discuss
Correct Answer: sulphur
- 8. Most of the plastics are safe to be used upto a maximum temperature of __________ °C.
Options- A. 100
- B. 150
- C. 350
- D. 450 Discuss
Correct Answer: 150
- 9. __________ is a thermosetting plastic.
Options- A. PVC
- B. Polythene
- C. Bakelite
- D. polystyrene Discuss
Correct Answer: Bakelite
- 10. Buna-N is also called
Options- A. butyl rubber
- B. nitrile rubber
- C. neoprene
- D. thiokol Discuss
Correct Answer: nitrile rubber
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