271. __________ is a thermosetting plastic.
PVC
Polythene
Bakelite
polystyrene
✅ The correct answer is option C.
Polymer Technology MCQs
272. Nylon-6 is manufactured from
caprolactum.
adipic acid and hexamethylene diamine.
maleic anhydride and hexamethylene diamine.
sebasic acid and hexamethylene diamine.
✅ The correct answer is option A.
273. Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals.
organic peroxides
sulphuric acid
hydroflouric acid
none of these
✅ The correct answer is option A.
274. Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called
polyurethane
silicone rubber
teflon
epoxy resin
✅ The correct answer is option C.
275. Vinyl flooring is done using __________ sheets.
polypropylene
PVC
polythene
polyvinyl acetate
✅ The correct answer is option B.
276. __________ is not a condensation polymer.
Teflon
Nylon-66
Dacron
Polystyrene
✅ The correct answer is option A.
277. __________ polythene is most prone to stress-cracking
High density
Low density
Cross-linked
Linear low density
✅ The correct answer is option A.
278. Neoprene is the trade name of
polyurethane
phenol formaldehyde
polychlorophrene
styrene butadiene rubber (SBR)
✅ The correct answer is option C.
279. Tyres are made by
injection moulding
extrusion
rotational moulding
compression moulding
✅ The correct answer is option C.
280. A copolymer is formed by the combination of two or more monomer molecules
in a chain without the elimination of water.
with the elimination of small amount of water.
of the same monomer by elimination of small molecules of water.
none of these.
✅ The correct answer is option A.