polyurathane
SBR
teflon
bakelite
✅ The correct answer is option B.
Chemical Engineering MCQs
__________ tubes are good substitude for human blood vessels onrheart by-pass operation.
PVC
Polythene
Teflon/dacron
Polystyrene
✅ The correct answer is option C.
Tubeless tyres are made of __________ rubber, which is a co-polymer of isoprene & isobutylene.
nitrile
silicone
neoprene
butyl
✅ The correct answer is option D.
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.
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.
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.
Dacron is a/an
polyester
unsaturated polyester
polyamide
inorganic polymer
✅ The correct answer is option A.
Linear polymers are normally
thermosetting.
thermosplastic.
elastometric.
having extremely high softening point.
✅ 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.