Thermoplastic
Melamine
Addition
none of these
✅ The correct answer is option B.
Polymer Technology MCQs
Which of the following additives are added to plastics to make it impervious to X-rays ?
Asbestos
Barium salt
Carborundum
Phthalic acid
✅ The correct answer is option B.
Buna-S is also called
polyurathane
SBR
teflon
bakelite
✅ The correct answer is option B.
Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
nitrile
silicone
neoprene
butyl
✅ The correct answer is option D.
In nylon-66, the first and second numbers (i.e., 6) respectively designate the number of carbon atoms present in the
hexamethylene diamine and the ring.
hexamethylene diamine and the adipic acid.
adipic acid and the ring.
none of these.
✅ The correct answer is option B.
Polyvinyl chloride (PVC)
is produced by polycondensation reaction.
uses either emulsion or suspension polymerisation methods.
can be made thermosetting by adding a plasticiser.
softening temperature is 200°C.
✅ The correct answer is option B.
Addition polymerisation is not involved in the manufacture of
low density polythene.
poly vinyl chloride.
polystyrene.
polyhexamethylene adipamide.
✅ The correct answer is option D.
Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its
tensile strength
chemical resistance
flexibility
all (a), (b) & (c)
✅ The correct answer is option C.
__________ is a copolymer.
Nylon-66
Polyrophylene
PVC
Poly tetra flouro ethylene
✅ The correct answer is option A.
Cellulose is the main contituent of most __________ fibres.
acrylic
spandex
synthetic
natural
✅ The correct answer is option D.