Discussion
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- Question
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.
Options- A. polythene
- B. PVC
- C. rayon
- D. polyvinyl acetate
- Correct Answer
- PVC
- 1. A copolymer of vinyl and vinylidine chloride is called
Options- A. treylene
- B. orlon
- C. saran
- D. dacron Discuss
- 2. Molecular weights of plastics ranges from
Options- A. 1000 to 5000
- B. 5000 to 1000
- C. 20000 to 25000
- D. 109 to l011 Discuss
- 3. __________ polymer is used for making unbreakable crockery.
Options- A. Thermoplastic
- B. Melamine
- C. Addition
- D. none of these Discuss
- 4. Thermosetting polymers as compared to thermoplastic polymers
Options- A. are formed by addition polymerisation.
- B. have three dimensional structure.
- C. have linear structure.
- D. none of these. Discuss
- 5. Identify the group in which all the polymers mentioned can be used to make fibres.
Options- A. Butadiene copolymers, Polyamides, Urea aldehyde
- B. Cellulose derivatives, Polyisoprene, Polyethylene
- C. Cellulose derivatives, Polyamides, Polyurathane
- D. Polypropylene, Poly vinyl chloride, Silicon Discuss
- 6. Benzoyl chloride is not used as a catalyst in the manufacture of
Options- A. polystyrene
- B. polyvinyl acetate
- C. polypropylene
- D. polyvinyl chloride-co-vinylacetate Discuss
- 7. Polythene is a/an
Options- A. addition polymerisation product.
- B. condensation polymerisation product.
- C. thermosetting material.
- D. none of these. Discuss
- 8. Teflon is
Options- A. phenol formaldehyde
- B. an inorganic polymer
- C. polytetra florouethylene (PTFE)
- D. a monomer Discuss
- 9. Polycaprolactum is also known as
Options- A. nylon-66
- B. nylon-6
- C. teflon
- D. SBR Discuss
- 10. The monomer of natural rubber is
Options- A. DMT
- B. isoprene
- C. 2 methyl-1-propene
- D. both (b) and (c) Discuss
Polymer Technology problems
Search Results
Correct Answer: saran
Correct Answer: 20000 to 25000
Correct Answer: Melamine
Correct Answer: have three dimensional structure.
Correct Answer: Cellulose derivatives, Polyisoprene, Polyethylene
Correct Answer: polypropylene
Correct Answer: addition polymerisation product.
Correct Answer: polytetra florouethylene (PTFE)
Correct Answer: nylon-6
Correct Answer: both (b) and (c)
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