Chemical Engineering - Polymer Technology
Exercise :: Polymer Technology - Section 3
| 11. |
Poly tetra flouro ethylene (PTFE) is known as |
| A. |
dacron | | B. |
teflon | | C. |
bakelite | | D. |
celluloid |
Answer: Option B
Explanation:
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| 12. |
Thermosetting resins/polymers as compared to thermoplastic ones are |
| A. |
soluble in all organic solvents. | | B. |
more brittle. | | C. |
formed by addition polymerisation only. | | D. |
easily reshaped & reused. |
Answer: Option B
Explanation:
|
| 13. |
The generic chemical name for the class of polymers which are commerically known as nylons is |
| A. |
polyolefins | | B. |
polyamide | | C. |
polyacrylate | | D. |
polyurathane |
Answer: Option B
Explanation:
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| 14. |
Polycondensation reaction of polymerisation |
| A. |
does not produce linear polymers. | | B. |
produces only thermoplastic material. | | C. |
produces epoxy polymers. | | D. |
does not need any catalyst. |
Answer: Option C
Explanation:
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| 15. |
Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but |
| A. |
polyacrylonitrile | | B. |
polyamide | | C. |
saturated polyester | | D. |
alkyd resin |
Answer: Option A
Explanation:
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