Chemical Engineering - Polymer Technology

31. 

Orlan fibre which is used as a wool sub stitute is

A. an amorphous polymer.
B. a natural polymeric fibre.
C. polyacrylonitrile.
D. polymethylmethacrylate (PMMA).

Answer: Option C

Explanation:

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32. 

Neoprene is the trade name of

A. polyurethane
B. phenol formaldehyde
C. polychlorophrene
D. styrene butadiene rubber (SBR)

Answer: Option C

Explanation:

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33. 

Trade name of __________ is neoprene.

A. polychloroprene
B. polyisoprene
C. polytetraflouroethylene
D. poly vinyl acetate

Answer: Option A

Explanation:

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34. 

SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at

A. 1:3
B. 3:1
C. 1:2
D. 2:1

Answer: Option A

Explanation:

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35. 

Dacron is a/an

A. polyester
B. unsaturated polyester
C. polyamide
D. inorganic polymer

Answer: Option A

Explanation:

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