chemical engineering polymer technology MCQs – Page 11

Practise multiple-choice questions from chemical engineering polymer technology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering polymer technology Mcqs

201. Rayon is superior to cotton in making gauge for wound treatment, because rayon_____________________?
0

A. Is a synthetic polymer

B. Does not stick to the wound unlike cotton

C. Can absorb over 90% of its own weight of water

D. Both B. and C.

202. Which of the following is not a polyolefin ?
0

A. None of these

B. Polystyrene

C. Polypropylene

D. Neoprene

203. Starting material for the production of SBR is ____________________?
0

A. Ethyl alcohol

B. Ethylene

C. Both A. & B.

D. Neither A. nor B.

204. ____________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR?
0

A. Strength

B. Freezing point

C. Resilience

D. Percent elongation

205. In case of wet spinning of polymers, the polymer solution is forced through spinnerates into, a coagulating bath to give a filament form. Wet spinning is not used in case of the _____________ fibres?
0

A. Acrylic

B. Polyvinyl acetate

C. Viscose rayon

D. Saturated polyester

206. Thermoplastic materials___________________?
0

A. Do not soften on application of heat

B. Are solvent insoluble

C. Are heavily branched molecules

D. None of these

207. Which of the following is a polymer of Hexamethylene diamine and adipic acid ?
0

A. Nylon-6

B. Nylon-6, 10

C. Nylon-66

D. Epoxy resin

208. Which of the following is not an elastomer ?
0

A. None of these

B. Polyisoprene

C. Nitrile-butadiene

D. Neoprene

209. Visco-elastic behaviour exhibited by plastics is a ______________ like behaviour?
0

A. Liquid

B. Solid

C. Neither solid nor liquid

D. Combination of solid & liquid

210. Polymerisation of poly functional monomers produces polymers having_________________?
0

A. None of these

B. Low viscosity

C. Good mechanical strength

D. Low melting point

211. Which of the following is not a natural fiber ?
0

A. Wool

B. Silk

C. Cotton

D. Viscose rayon

212. Which of the following polymers does not belong to the class of Polyacrylate polymer ?
0

A. Polyacrylonitrile

B. PMMA

C. Poly Ethyl acrylate

D. None of these

213. Polyvinyl chloride (PVC) ____________________?
0

A. Can be made thermosetting by adding a plasticiser

B. Softening temperature is 200C

C. Is produced by Polycondensation reaction

D. Uses either emulsion or suspension polymerisation methods

214. Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser ?
0

A. Tricresyl phosphate

B. Ethylene glycol

C. Stearic acid estors

D. Esters of phthalic acid

215. Which of the following polymers shows the highest anti-tacking properties ?
0

A. Phenolic resin

B. Melamine formaldehyde resin

C. Epoxy resin

D. Alkyd resin

216. Cross linked polymers are__________________?
0

A. Thermosetting

B. Fibres only

C. Thermoplastic

D. Either A. or B.

217. Polyhexamethylene adipamide is also known as______________?
0

A. Nylon-66

B. Silicone rubber

C. Bakelite

D. Epoxy resin

218. Benzoyl chloride is not used as a catalyst in the manufacture of___________________?
0

A. Polyvinyl acetate

B. Polypropylene

C. Polystyrene

D. Polyvinyl chloride-co-vinyl acetate

219. Diphenylamine is added to rubber to_________________?
0

A. Vulcanise it

B. Make it thermosetting

C. Protect it from deterioration on exposure to air

D. Make it non-inflammable

220. The inter particle forces between linear chains in nylon-66 are ______________ bonds?
0

A. None of these

B. Hydrogen

C. Ionic

D. Covalent

Previous Next

Showing 201 to 220 of 286 mcqs