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Polymer Technology
Comments
Question
Which of the following rubbers has the widest service temperature range (-75 to 275°C)?
Options
A. Butyl rubber
B. Silicon rubber
C. Nitrile rubber
D. Silicone rubber
Correct Answer
Silicone rubber
Polymer Technology problems
Search Results
1. Which of the following is a copolymer?
Options
A. Polystyrene
B. SBR
C. P.T.F.E.
D. Polypropylene
Show Answer
Scratch Pad
Discuss
Correct Answer: SBR
2. Which of the following is not the commercial name of polymethylmethacrylate (PMMA)?
Options
A. Perspex
B. Lucite
C. Plexiglass
D. Teflon
Show Answer
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Discuss
Correct Answer: Teflon
3. Nylon-66 compared to nylon-6 has
Options
A. lower melting point.
B. more abrasion resistant properties.
C. higher hardness.
D. all (a), (b) and (c).
Show Answer
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Discuss
Correct Answer: higher hardness.
4. Silicone resins, which are highly water repellant and has good heat resistance can not be used
Options
A. as room temperature adhesive.
B. as grease & lubricant.
C. hydraulic fluid for heat transfer.
D. resin for lamination.
Show Answer
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Discuss
Correct Answer: as room temperature adhesive.
5. In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer?
Options
A. PTFE
B. Buna-S
C. PMMA
D. Polycaprolactum
Show Answer
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Discuss
Correct Answer: Buna-S
6. Elastomers are
Options
A. thermosetting material.
B. exemplified by protein derivatives.
C. having high flexural strength.
D. having very high tensile strength and heat resistance.
Show Answer
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Correct Answer: having high flexural strength.
7. All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic
Options
A. filaments
B. pipes
C. buckets
D. tubings
Show Answer
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Discuss
Correct Answer: buckets
8. Epoxy resins (i.e., epoxide polymers)
Options
A. are made by addition polymerisation reaction only.
B. contain an epoxy group (
) at the ends of the polymer.
C. are cross-linked polymers only.
D. use emulsion polymerisation methods.
Show Answer
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Discuss
Correct Answer: contain an epoxy group (
) at the ends of the polymer.
9. Which of the following polymers does not belong to the class of polyacrylate polymer?
Options
A. PMMA
B. Polyacrylonitrile
C. Polyethyl acrylate
D. None of these
Show Answer
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Discuss
Correct Answer: None of these
10. Catalyst used in the production of high density polythene by low pressure Ziegler process is
Options
A. aluminium triethyl activated with TiCl
4
B. platinum
C. molybdenum
D. Nickel
Show Answer
Scratch Pad
Discuss
Correct Answer: aluminium triethyl activated with TiCl
4
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