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Polymer Technology
Comments
Question
Which of the following is not a natural fibre?
Options
A. Silk
B. Viscose rayon
C. Wool
D. Cotton
Correct Answer
Viscose rayon
Polymer Technology problems
Search Results
1. Styrene butadiene rubber (SBR) is
Options
A. a natural rubber.
B. another name of silicone rubber.
C. a synthetic polymer.
D. a synthetic monomer.
Show Answer
Scratch Pad
Discuss
Correct Answer: a synthetic polymer.
2. Dacron is a
Options
A. condensation polymerisation product of hexamethylene diamine and adipic acid.
B. condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol.
C. thermosetting material.
D. none of these.
Show Answer
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Discuss
Correct Answer: none of these.
3. __________ is not a condensation polymer.
Options
A. Teflon
B. Nylon-66
C. Dacron
D. Polystyrene
Show Answer
Scratch Pad
Discuss
Correct Answer: Teflon
4. Acrylonitrile is mainly used in the __________ industry.
Options
A. polymer
B. printing
C. dyeing
D. photographic
Show Answer
Scratch Pad
Discuss
Correct Answer: polymer
5. __________ 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
Show Answer
Scratch Pad
Discuss
Correct Answer: Resilience
6. Nylon-66 is a polyamide of
Options
A. hexamethylene diamine and adipic acid.
B. adipic acid and methyl amine.
C. vinyl chloride and formaldeyde.
D. none of these.
Show Answer
Scratch Pad
Discuss
Correct Answer: hexamethylene diamine and adipic acid.
7. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
Options
A. molecular sizes.
B. magnitude of intermolecular forces.
C. resistance to heat.
D. polymerisation mechanism.
Show Answer
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Discuss
Correct Answer: magnitude of intermolecular forces.
8. Thermosetting plastic materials
Options
A. can be repeatedly melted.
B. is useful for melt casting.
C. can not be melted after forming.
D. is useful for spinning.
Show Answer
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Discuss
Correct Answer: can not be melted after forming.
9. Polycaprolactum is
Options
A. nylon-6
B. nylon-66
C. dacron
D. rayon
Show Answer
Scratch Pad
Discuss
Correct Answer: nylon-6
10. Plexiglass (also called lucite) because of its high optical transparency is used for making lenses. It is chemically
Options
A. polymethyl methacrylate (PMMA).
B. Polytetraflouroethylene(PTFE).
C. polycarbonates.
D. phenolic resins.
Show Answer
Scratch Pad
Discuss
Correct Answer: polymethyl methacrylate (PMMA).
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