Discussion
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- Question
Gutta parcha rubber is
Options- A. soft & tacky at room temperature.
- B. an isomer of natural rubber.
- C. a thermosetting resin.
- D. recovered by coagulation of rubber latex.
- Correct Answer
- an isomer of natural rubber.
- 1. 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
- 2. Which of the following has the weakest intermolecular forces?
Options- A. Polyisoprene
- B. Nylon-66
- C. Polystyrene
- D. Bakelite Discuss
- 3. 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
- 4. __________ is normally used for the manufacture of refrigerator components and transistor parts.
Options- A. Polyproylene
- B. Polystyrene
- C. Polyester
- D. Polyurathene Discuss
- 5. 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
- 6. Thermosetting resins/polymers as compared to thermoplastic ones are
Options- A. soluble in all organic solvents.
- B. more brittle.
- C. formed by addition polymerisation only.
- D. easily reshaped & reused. Discuss
- 7. In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of
Options- A. cross linked polystyrene.
- B. phenol formaldehyde resins.
- C. polyesters.
- D. polyamides. Discuss
- 8. Cellulose content in bomboo fibre is about __________ percent.
Options- A. 10
- B. 20
- C. 50
- D. 85 Discuss
- 9. In condensation polymerisation as compared to addition polymerisation
Options- A. the monomers are unsaturated compounds.
- B. no co-product is lost.
- C. the monomers contain two functional groups.
- D. generally only one monomer is involved Discuss
- 10. Poly tetra flouro ethylene (PTFE) is known as
Options- A. dacron
- B. teflon
- C. bakelite
- D. celluloid Discuss
Polymer Technology problems
Search Results
Correct Answer: 10-2 to 10-5
Correct Answer: Polyisoprene
Correct Answer: carbon atoms in the linear polymer chain.
Correct Answer: Polystyrene
Correct Answer: terylene
Correct Answer: more brittle.
Correct Answer: cross linked polystyrene.
Correct Answer: 50
Correct Answer: the monomers contain two functional groups.
Correct Answer: teflon
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