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Chemical Engineering
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Polymer Technology
Comments
Question
Polymers are
Options
A. micromolecules
B. macromolecules
C. sub-micromolecules
D. none of these
Correct Answer
macromolecules
Polymer Technology problems
Search Results
1. Adipic acid is an intermediate in the manufacture of
Options
A. perspex
B. nylon-66
C. polystyrene
D. bakelite
Show Answer
Scratch Pad
Discuss
Correct Answer: nylon-66
2. Styrene which is a monomer for the production of polystyrene, is commercially produced by the
Options
A. catalytic dehydrogenation of ethyl benzene.
B. dehydration of ethyl alcohol followed by hydrogenation.
C. reacting ethylene oxide with acetal-dehyde.
D. fermentation of starch.
Show Answer
Scratch Pad
Discuss
Correct Answer: catalytic dehydrogenation of ethyl benzene.
3. Bakelite (phenol-formaldehyde) resin can not be used as
Options
A. decorative paint.
B. decorative laminates.
C. electrical insulation.
D. glass reinforced plastics.
Show Answer
Scratch Pad
Discuss
Correct Answer: decorative paint.
4. Which of the following polymers are produced by employing all bulk polymerisation, solution polymerisation & suspension polymerisation technique of addition (chain) polymerisation?
Options
A. PVC
B. Bakelite
C. PTFE
D. Epoxy resin
Show Answer
Scratch Pad
Discuss
Correct Answer: PVC
5. Which of the following is not an elastomer?
Options
A. Polyisoprene
B. Neoprene
C. Nitrile-butadiene
D. None of these
Show Answer
Scratch Pad
Discuss
Correct Answer: None of these
6. Terylene is a/an
Options
A. addition polymer
B. poly amide
C. homopolymer
D. none of these
Show Answer
Scratch Pad
Discuss
Correct Answer: none of these
7. __________ polythene is most prone to stress-cracking
Options
A. High density
B. Low density
C. Cross-linked
D. Linear low density
Show Answer
Scratch Pad
Discuss
Correct Answer: High density
8. Thermocole (expanded polystyrene) is not used for
Options
A. low temperature thermal insulation as in refrigerator and air conditioners.
B. accoustic control and ceiling for building.
C. high temperature thermal insulation in furnaces.
D. packing of delicate electronic gadgets.
Show Answer
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Discuss
Correct Answer: high temperature thermal insulation in furnaces.
9. The repeating units of PTFE are
Options
A. Cl
2
CH-CH
3
B. F
2
C = CF
2
C. F
3
C-CF
3
D. FClC = CF
2
Show Answer
Scratch Pad
Discuss
Correct Answer: F
2
C = CF
2
10. Orion is
Options
A. a copolymer.
B. a condensation polymer.
C. obtained by polymerising vinyl cyanide.
D. all (a), (b) and (c).
Show Answer
Scratch Pad
Discuss
Correct Answer: obtained by polymerising vinyl cyanide.
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