Discussion
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- Question
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.
- Correct Answer
- high temperature thermal insulation in furnaces.
- 1. __________ polythene is most prone to stress-cracking
Options- A. High density
- B. Low density
- C. Cross-linked
- D. Linear low density Discuss
- 2. Terylene is a/an
Options- A. addition polymer
- B. poly amide
- C. homopolymer
- D. none of these Discuss
- 3. Polymers are
Options- A. micromolecules
- B. macromolecules
- C. sub-micromolecules
- D. none of these Discuss
- 4. Adipic acid is an intermediate in the manufacture of
Options- A. perspex
- B. nylon-66
- C. polystyrene
- D. bakelite Discuss
- 5. 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
- 6. The repeating units of PTFE are
Options- A. Cl2CH-CH3
- B. F2 C = CF2
- C. F3 C-CF3
- D. FClC = CF2 Discuss
- 7. Orion is
Options- A. a copolymer.
- B. a condensation polymer.
- C. obtained by polymerising vinyl cyanide.
- D. all (a), (b) and (c). Discuss
- 8. 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
- 9. 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
- 10. Starting material for the production of butadiene in India is
Options- A. naphthalene
- B. benzol
- C. ethyl alcohol
- D. phthalic anhydride Discuss
Polymer Technology problems
Search Results
Correct Answer: High density
Correct Answer: none of these
Correct Answer: macromolecules
Correct Answer: nylon-66
Correct Answer: catalytic dehydrogenation of ethyl benzene.
Correct Answer: F2 C = CF2
Correct Answer: obtained by polymerising vinyl cyanide.
Correct Answer: engineering plastic
Correct Answer: initial hydrolysis of silicone monomer.
Correct Answer: ethyl alcohol
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