chemical engineering polymer technology MCQs – Page 9

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 Review each marked answer and report any item that may be outdated or unclear.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

161. Styrene butadiene rubber (SBR) is never used for making__________________?
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A. Soles of shoes

B. Front wheel tyres of aeroplanes (i.e., heavy duty tyres)

C. Gaskets

D. Coated fabrics

162. A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of_______________________?
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A. Urea-formaldehyde resins

B. Polyamides

C. Siloxane elastomers

D. Vinyl polymers

163. Typical solvent polymerisation reaction conditions for the production of high density polythene by Zeigler process is__________________?
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A. 1000 kgf/cm2 and 100C

B. 7 kgf/cm2 and 70 C

C. 7 kgf/cm2 and 700C

D. 1 kgf/cm2 (gage) and 70C

164. ______________ fibres are made of polyamides?
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A. Rayon

B. Orion

C. Dacron

D. Nylon

165. Poly-tetra-fluoro ethylene (PTFE) is known as_________________?
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A. Celluloid

B. Bakelite

C. Dacron

D. Teflon

166. Which of the following low molecular weight (<104), soft & waxy polymer is used in chewing gum? ?
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A. Cellulose acetate

B. Polyvinyl acetate

C. Thiokol

D. PVC

167. Poly Vinyl chloride (PVC) is a ________________ material?
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A. Fibrous

B. Chemically active

C. Thermosetting

D. Thermoplastic

168. Pick out the wrong statement ?
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A. Teflon is formed by step growth polymerisation

B. Addition polymers are generally formed by chain growth polymerisation

C. Condensation polymers are generally formed by step growth polymerisation

D. Bakelite is formed by step growth polymerisation

169. Rayon is a ____________ fibre?
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A. Polyamide

B. Cellulosic

C. Natural

D. Polyester

170. Tubeless tyres are made of ______________ rubber, which is a co-polymer of isoprene & isobutylene?
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A. Nitrile

B. Silicone

C. Neoprene

D. Butyl

171. Main constituent of natural rubber is_________________?
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A. Poly chloroprene

B. Polybutadiene

C. Polyisoprene

D. Polystyrene

172. Epoxy resin is____________________?
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A. Not used for surface coating

B. A good abrasive

C. A polyester

D. An elastomer

173. Molecular weight of polymers are in the range of__________________?
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A. 107-109

B. 10 to 103

C. 109-1011

D. 102-107

174. _______________ is a natural fiber?
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A. Nylon-6

B. None of these

C. Cellulose

D. Dacron

175. Cellulose content in bamboo fibre is about ______________ percent?
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A. 85

B. 20

C. 10

D. 50

176. Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m2. Which of the following polymers has the maximum film elongation (of the order of 100%) ?
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A. Teflon

B. Water impermeable cellophane

C. Cellulose acetate

D. Polythene

177. Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but____________________?
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A. Polyamide

B. Saturated polyester

C. Alkyd resin

D. Polyacrylonitrile

178. _____________ scrap can be recycled & reutilised?
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A. None of these

B. Bakelite

C. Polythene

D. Epoxy resin

179. Plasticisers are added to synthetic plastics to ________________?
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A. Develop new improved properties not present in the original resin

B. Impart flexibility

C. Improve workability during fabrication

D. All A., B. and C.

180. _______________________ is not a condensation polymer ?
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A. Teflon

B. Polystyrene

C. Nylon-66

D. Dacron

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