Polymer Technology problems
- 1. Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is
Options- A. nylon-66
- B. teflon
- C. polyester
- D. bakelite Discuss
Correct Answer: teflon
- 2. The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is
Options- A. polyvinyl alcohol
- B. polyvinyl acetale
- C. polyvinyl butyral
- D. PVC Discuss
Correct Answer: polyvinyl butyral
- 3. Styrene butadiene rubber (SBR) is never used for making
Options- A. coated fabrics
- B. front wheel tyres of aeroplanes (i.e., heavy duty tyres)
- C. gaskets
- D. soles of shoes Discuss
Correct Answer: front wheel tyres of aeroplanes (i.e., heavy duty tyres)
- 4. Which of the following is generally not drawn into fibre?
Options- A. Polyamide
- B. Unsaturated polyesters
- C. Saturated polyesters
- D. Polyacrylonitrile Discuss
Correct Answer: Unsaturated polyesters
- 5. Polycondensation reaction of polymerisation
Options- A. does not produce linear polymers.
- B. produces only thermoplastic material.
- C. produces epoxy polymers.
- D. does not need any catalyst. Discuss
Correct Answer: produces epoxy polymers.
- 6. In step growth polymerisation, condensation occurs in a stepwise manner with or without the elimination of smaller molecules. An example of step growth polymerisation product is
Options- A. terylene
- B. polybutadiene
- C. PVC
- D. polypropylene Discuss
Correct Answer: terylene
- 7. __________ is normally used for the manufacture of refrigerator components and transistor parts.
Options- A. Polyproylene
- B. Polystyrene
- C. Polyester
- D. Polyurathene Discuss
Correct Answer: Polystyrene
- 8. In nylon-6, the number 6 represents the total number of
Options- A. carbon atoms in the ring.
- B. carbon atoms in the linear polymer chain.
- C. nitrogen atoms in the ring.
- D. hydrogen atoms in the ring. Discuss
Correct Answer: carbon atoms in the linear polymer chain.
- 9. Which of the following has the weakest intermolecular forces?
Options- A. Polyisoprene
- B. Nylon-66
- C. Polystyrene
- D. Bakelite Discuss
Correct Answer: Polyisoprene
- 10. Size range of polymer molecules varies from __________ metre.
Options- A. 10-2 to 10-5
- B. 10-4 to 10-7
- C. 10-1 to 10-2
- D. 10-8 to 10-10 Discuss
Correct Answer: 10-2 to 10-5
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