161. The generic chemical name for the class of polymers which are commerically known as nylons is
polyolefins
polyamide
polyacrylate
polyurathane
✅ The correct answer is option B.
Polymer Technology MCQs
162. In a co-polymer, the repeating units contain two different monomers. Which of the following is a copolymer ?
PTFE
Buna-S
PMMA
Polycaprolactum
✅ The correct answer is option B.
163. Which of the following is not a condensation polymer ?
Bakelite
Melamine polymer
Polymethylmethacrylate (PMMA)
None of these
✅ The correct answer is option C.
164. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of __________ °C.
-5
Oct-30
250-280
500-600
✅ The correct answer is option C.
165. Pickout the wrong statement.
Polymers made of only one monomer is called homopolymer.
Polymers made of more than one monomer is called copolymer or mixed polymer.
Vulcanised rubber is more elastic than natural rubber.
The intermoleculer forces in ther-mosplastic polymers are intermediate to that of elastomers & fibres.
✅ The correct answer is option A.
166. Caprolactum, a raw material for the manufacture of nylon-6, is produced from
phenol
naphthalene
benzene
pyridine
✅ The correct answer is option C.
167. __________ moulding is used for shaping of thermosetting plastics exclusively.
Compression
Injection
Transfer
Extrusion
✅ The correct answer is option C.
168. Thermal pyrolysis of ethylene dichloride produces
trichlorethylene
vinyl chloride
ethanol amine
ethylene oxide
✅ The correct answer is option B.
169. All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it can not be used for the production of plastic
filaments
pipes
buckets
tubings
✅ The correct answer is option C.
170. Epoxy resin is
not used for surface coating.
a good abrasive.
an elastomer.
a polyester.
✅ The correct answer is option B.