polystyrene
polyisoprene
polybutadiene
poly chloroprene
✅ The correct answer is option B.
Chemical Engineering MCQs
Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from __________ resins.
epoxy
phenol formaldehyde
urea formaldehyde
melamine formaldehyde
✅ The correct answer is option C.
Which of the following is not the commercial name of polymethylmethacrylate (PMMA) ?
Perspex
Lucite
Plexiglass
Teflon
✅ The correct answer is option D.
Thermoplastic resins usually
remain hard as long as they are hot.
can not be reclaimed from waste.
permanent setting resins.
less brittle than thermosetting resins.
✅ The correct answer is option D.
Density of low density polythene is about __________ gm/c.c.
0.38
0.56
0.81
0.91
✅ The correct answer is option D.
Which of the following is a natural polyamide fibre.
Wool
Silk
Cotton
None of these
✅ The correct answer is option A.
Which of the following is generally not drawn into fibre ?
Polyamide
Unsaturated polyesters
Saturated polyesters
Polyacrylonitrile
✅ The correct answer is option B.
Condensation polymerisation of __________ produces bakelite.
propylene
phenol & formaldehyde
phenol & acetaldehyde
urea & formaldehyde
✅ The correct answer is option B.
Unbreakable crockeries are made from __________ polymers.
polystyrene
melamine
polystyrene
polyurathane
✅ The correct answer is option B.
Terylene is
same as dacron
a polyester
both(a) & (b)
neither (a) nor (b)
✅ The correct answer is option C.