Polymer Technology problems
- 1. Viscose rayon is
Options- A. cellulose nitrate
- B. regenerated cellulose nitrate
- C. regenerated cellulose acetate
- D. none of these Discuss
Correct Answer: none of these
- 2. Molecular weight of polymers are in the range of
Options- A. 10 to 103
- B. 102-107
- C. 107-109
- D. 109-1011 Discuss
Correct Answer: 102-107
- 3. Diphenylamine is added to rubber to
Options- A. valcanise it.
- B. protect it from deterioration on exposure to air.
- C. make it non-inflammable.
- D. make it thermosetting. Discuss
Correct Answer: protect it from deterioration on exposure to air.
- 4. Buna-S is also called
Options- A. polyurathane
- B. SBR
- C. teflon
- D. bakelite Discuss
Correct Answer: SBR
- 5. Thermoplastic resins usually
Options- A. remain hard as long as they are hot.
- B. can not be reclaimed from waste.
- C. permanent setting resins.
- D. less brittle than thermosetting resins. Discuss
Correct Answer: less brittle than thermosetting resins.
- 6. __________ are produced by reacting polybasic acid (e.g. phthalic anhydride) with polyhydric alcohol (e.g., glycerol).
Options- A. Unsaturated polyester
- B. Alkyd resins
- C. Saturated polyester
- D. Amino resins Discuss
Correct Answer: Alkyd resins
- 7. Hot drink (e.g, tea) cups are usually made of
Options- A. polystyrene
- B. polythene
- C. polypropylene
- D. PVC Discuss
Correct Answer: polystyrene
- 8. Which of the following is not a thermoplastic material?
Options- A. Epoxy polymer
- B. PVC
- C. Polystyrene
- D. Polythene Discuss
Correct Answer: Epoxy polymer
- 9. The monomer for the production of neoprene rubber is
Options- A. acetylene
- B. chloroprene
- C. isoprene
- D. none of these Discuss
Correct Answer: chloroprene
- 10. Linear polymers are normally
Options- A. thermosetting.
- B. thermosplastic.
- C. elastometric.
- D. having extremely high softening point. Discuss
Correct Answer: thermosplastic.
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