density.
tensile strength.
melting point.
degree of irregularity in atomic packing.
✅ The correct answer is option D.
Polymer Technology MCQs
212. In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer ?
Bakelite (phenol formaldehyde)
Polyester
Polythene
Nylon-6
✅ The correct answer is option A.
213. Orlon is
a copolymer.
a condensation polymer.
obtained by polymerising vinyl cyanide.
all (a), (b) and (c).
✅ The correct answer is option C.
214. Which of the following is not a natural polymer ?
Nucleic acids e.g. RNA and DNA
Polysaccharides
Polyisoprene
Polyurethane
✅ The correct answer is option D.
215. Condensation polymerisation is not involved in the manufacture of
teflon
polythene
terylene
nylon
✅ The correct answer is option B.
216. Polyvinyl acetate is never used for making
moulded articles
fibres
adhesives
all (a), (b) & (c)
✅ The correct answer is option A.
217. Which of the following is a copolymer ?
Polystyrene
SBR
P.T.F.E.
Polypropylene
✅ The correct answer is option B.
218. Styrene butadiene rubber (SBR) as compared to natural rubber has
poor tensile strength.
poorer resistance.
greater amount of heat build up heavy loading.
all (a), (b) ana (c).
✅ The correct answer is option D.
219. __________ tubes are good substitude for human blood vessels onrheart by-pass operation.
PVC
Polythene
Teflon/dacron
Polystyrene
✅ The correct answer is option C.
220. Which of the following low molecular weight (<104 ), soft & waxy polymer is used in chewing gum ?
Cellulose acetate
Polyvinyl acetate
Thiokol
PVC
✅ The correct answer is option B.