41. Polycondensation reaction of polymerisation
does not produce linear polymers.
produces only thermoplastic material.
produces epoxy polymers.
does not need any catalyst.
✅ The correct answer is option C.
Polymer Technology MCQs
42. Starting material for the production of SBR is
ethyl alcohol
ethylene
both (a) & (b)
neither (a) nor (b)
✅ The correct answer is option C.
43. Neoprene is rendered non-inflammable, because of
its cross-linked structure.
its linear chain structure.
the presence of chlorine atoms in its monomer.
the absence of chlorine atoms in its monomer.
✅ The correct answer is option C.
44. 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.
45. 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.
46. Condensation polymerisation of __________ produces bakelite.
propylene
phenol & formaldehyde
phenol & acetaldehyde
urea & formaldehyde
✅ The correct answer is option B.
47. Which of the following is a natural polyamide fibre.
Wool
Silk
Cotton
None of these
✅ The correct answer is option A.
48. Styrene butadiene rubber (SBR) is
a natural rubber.
another name of silicone rubber.
a synthetic polymer.
a synthetic monomer.
✅ The correct answer is option C.
49. Nylon-6 is a
polyamide
thermosetting resin
polyester
none of these
✅ The correct answer is option A.
50. Polystyrene is a __________ plastic at room temperature.
ductile
brittle
malleable
none of these
✅ The correct answer is option B.