261. Zeigler – Natta catalyst (AlR3 – AlCl3) is used in the polymerisation of
vinyl acetate
vinyl chloride
propylene
styrene
✅ The correct answer is option C.
Polymer Technology MCQs
262. Polymethyl methacrylate (PMMA) which is also known as perspex and is produced by bulk polymerisation of methyl methacrylate is not a __________ polymer.
thermoplastic
thermosetting
linear
glass like transparent
✅ The correct answer is option B.
263. __________ practically possess no elasticity.
Vulcanite or ebonite
Spandex fibre
Polysulphide rubber
Epoxy resin
✅ The correct answer is option A.
264. Rayon is a __________ fibre.
cellulosic
polyamide
polyester
natural
✅ The correct answer is option A.
265. Properties of a polymer is affected by the
chain length.
intermolecular forces.
branching & cross-linking.
all (a), (b).
✅ The correct answer is option D.
266. The main use of butadiene is
as a plasticiser for unsaturated polyester.
in the manufacture of synthetic rubber.
as an anti-skimming agent in paint.
none of these.
✅ The correct answer is option B.
267. Bakelite is
same as polytetra flouro ethylene (PTFE).
an inorganic polymer.
same as thermoset phenol formaldehyde.
not a polymer.
✅ The correct answer is option C.
268. Condensation of bisphenol A with phosgene produces __________ which possess very good heat resistance.
polyurathane
polysulphone
polycarbonate
polyester
✅ The correct answer is option C.
269. __________ polymer is used for making unbreakable crockery.
Thermoplastic
Melamine
Addition
none of these
✅ The correct answer is option B.
270. 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.