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Polymer Technology
Comments
Question
__________ is a thermosetting plastic.
Options
A. PVC
B. Polythene
C. Bakelite
D. polystyrene
Correct Answer
Bakelite
Polymer Technology problems
Search Results
1. Most of the plastics are safe to be used upto a maximum temperature of __________ °C.
Options
A. 100
B. 150
C. 350
D. 450
Show Answer
Scratch Pad
Discuss
Correct Answer: 150
2. Most commonly used rubber vulcanisation agent is
Options
A. sulphur
B. bromine
C. platinum
D. alumina
Show Answer
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Discuss
Correct Answer: sulphur
3. Which of the following is a natural polyamide fibre.
Options
A. Wool
B. Silk
C. Cotton
D. None of these
Show Answer
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Discuss
Correct Answer: Wool
4. Phenol formaldehyde is produced by condensation polymerisation. It is also known as
Options
A. teflon
B. bakelite
C. polyester
D. nylon-66
Show Answer
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Discuss
Correct Answer: bakelite
5. Polycaprolactum is nothing but
Options
A. orlon
B. nylon 6, 6
C. nylon 6
D. saran
Show Answer
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Discuss
Correct Answer: nylon 6
6. Buna-N is also called
Options
A. butyl rubber
B. nitrile rubber
C. neoprene
D. thiokol
Show Answer
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Discuss
Correct Answer: nitrile rubber
7. __________ is a natural fibre.
Options
A. Cellulose
B. Dacron
C. Nylon-6
D. none of these
Show Answer
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Discuss
Correct Answer: Cellulose
8. Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is
Options
A. Ni
B. V
2
O
5
C. Fe
D. aluminium triethyl combined with titanium tetrachloride
Show Answer
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Discuss
Correct Answer: aluminium triethyl combined with titanium tetrachloride
9. Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as
Options
A. hardeners
B. anti-shrinkage agents
C. plasticisers
D. transparency improver
Show Answer
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Discuss
Correct Answer: plasticisers
10. Polypropylene is preferred to polythene, because the former is
Options
A. non-inflammable
B. harder
C. stronger
D. both(b) & (c)
Show Answer
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Discuss
Correct Answer: both(b) & (c)
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