Polymer Technology problems
- 1. Rain coats are made of
Options- A. neoprene
- B. PVC
- C. polyurathane
- D. SBR Discuss
Correct Answer: PVC
- 2. Styrene butadiene rubber is commercially manufactured by
Options- A. bulk polymerisation
- B. suspension polymerisation
- C. solution polymerisation
- D. emulsion polymerisation Discuss
Correct Answer: emulsion polymerisation
- 3. 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
Correct Answer: Polymers made of only one monomer is called homopolymer.
- 4. Terylene is
Options- A. same as dacron
- B. a polyester
- C. both(a) & (b)
- D. neither (a) nor (b) Discuss
Correct Answer: both(a) & (b)
- 5. Which of the following is not a condensation polymer?
Options- A. Bakelite
- B. Melamine polymer
- C. Polymethylmethacrylate (PMMA)
- D. None of these Discuss
Correct Answer: Polymethylmethacrylate (PMMA)
- 6. Condensation polymerisation of __________ produces bakelite.
Options- A. propylene
- B. phenol & formaldehyde
- C. phenol & acetaldehyde
- D. urea & formaldehyde Discuss
Correct Answer: phenol & formaldehyde
- 7. Commercial production of polypropylene employs __________ polymerisation.
Options- A. emulsion
- B. suspension
- C. solution
- D. bulk Discuss
Correct Answer: solution
- 8. __________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR.
Options- A. Percent elongation
- B. Resilience
- C. Freezing point
- D. Strength Discuss
Correct Answer: Resilience
- 9. Acrylonitrile is mainly used in the __________ industry.
Options- A. polymer
- B. printing
- C. dyeing
- D. photographic Discuss
Correct Answer: polymer
- 10. __________ is not a condensation polymer.
Options- A. Teflon
- B. Nylon-66
- C. Dacron
- D. Polystyrene Discuss
Correct Answer: Teflon
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