Discussion
Home ‣ Chemical Engineering ‣ Polymer Technology Comments
- Question
__________ polythene is most prone to stress-cracking
Options- A. High density
- B. Low density
- C. Cross-linked
- D. Linear low density
- Correct Answer
- High density
- 1. Terylene is a/an
Options- A. addition polymer
- B. poly amide
- C. homopolymer
- D. none of these Discuss
- 2. Polymers are
Options- A. micromolecules
- B. macromolecules
- C. sub-micromolecules
- D. none of these Discuss
- 3. Adipic acid is an intermediate in the manufacture of
Options- A. perspex
- B. nylon-66
- C. polystyrene
- D. bakelite Discuss
- 4. 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. Discuss
- 5. Bakelite (phenol-formaldehyde) resin can not be used as
Options- A. decorative paint.
- B. decorative laminates.
- C. electrical insulation.
- D. glass reinforced plastics. Discuss
- 6. 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. Discuss
- 7. The repeating units of PTFE are
Options- A. Cl2CH-CH3
- B. F2 C = CF2
- C. F3 C-CF3
- D. FClC = CF2 Discuss
- 8. Orion is
Options- A. a copolymer.
- B. a condensation polymer.
- C. obtained by polymerising vinyl cyanide.
- D. all (a), (b) and (c). Discuss
- 9. Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styrene-acrylonitfile copolymer with butadiene based elastomer, is a/an
Options- A. rigid foam
- B. engineering plastic
- C. thermosetting polymer
- D. spongy rubber Discuss
- 10. The rate controlling step in the manufacture of silicone rubber is the
Options- A. polymer termination step.
- B. condensation of siloxane to silicone.
- C. initial hydrolysis of silicone monomer.
- D. none of these. Discuss
Polymer Technology problems
Search Results
Correct Answer: none of these
Correct Answer: macromolecules
Correct Answer: nylon-66
Correct Answer: catalytic dehydrogenation of ethyl benzene.
Correct Answer: decorative paint.
Correct Answer: high temperature thermal insulation in furnaces.
Correct Answer: F2 C = CF2
Correct Answer: obtained by polymerising vinyl cyanide.
Correct Answer: engineering plastic
Correct Answer: initial hydrolysis of silicone monomer.
Comments
There are no comments.More in Chemical Engineering:
Programming
Copyright ©CuriousTab. All rights reserved.