chemical engineering polymer technology MCQs – Page 8

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 Review each marked answer and report any item that may be outdated or unclear.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

141. In condensation polymerisation as compared to addition polymerisation____________________?
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A. The monomers are unsaturated compounds

B. No co-product is lost

C. Generally only one monomer is involved

D. The monomers contain two functional groups

142. Styrene which is a monomer for the production of polystyrene, is commercially produced by the __________________?
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A. Catalytic dehydrogenation of ethyl benzene

B. Dehydration of ethyl alcohol followed by hydrogenation

C. Reacting ethylene oxide with acetaldehyde

D. Fermentation of starch

143. Polymerisation process in which two or more monomers of chemically different nature take part is called__________________?
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A. Chain polymerisation

B. Addition polymerisation

C. Copolymerisation

D. None of these

144. Branched chain polymers compared to linear polymers have higher ____________________?
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A. Density

B. Melting point

C. Degree of irregularity in atomic packing

D. Tensile strength

145. Dacron is a _____________________________?
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A. Condensation polymerisation product of Hexamethylene diamine and adipic acid

B. Thermosetting material

C. Condensation polymerisation product of dimethyl terephthalate (DMT) and ethylene glycol

D. None of these

146. The starting material used for the manufacture of caprolactam is________________?
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A. Ethylene glycol

B. Ethyl benzene

C. Cyclohexane

D. DMT

147. The major constituent of laminate of safety glass, which holds the broken glass, pieces in their places during accident (and thus minimises the danger from flying glass fragments) is____________________?
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A. Polyvinyl alcohol

B. Polyvinyl butyral

C. Polyvinyl acetate

D. PVC

148. Polyvinyl chloride (PVC) is __________________?
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A. A condensation polymerisation product

B. None of these

C. Made by employing emulsion polymerisation

D. A thermosetting material

149. Liners of bags are usually made of ____________________?
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A. Polythene

B. PVC

C. Polyesters

D. Polypropylene

150. Thermal pyrolysis of ethylene dichloride produces ____________________?
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A. Vinyl chloride

B. Ethanol amine

C. Trichloroethylene

D. Ethylene oxide

151. Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces________________?
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A. PVC

B. Nylon-6

C. Polyester

D. Dacron

152. ? glucose is the monomer of__________________?
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A. Starch

B. None of these

C. Protein

D. Cellulose

153. Which of the following is a natural polyamide fiber?
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A. Cotton

B. Silk

C. None of these

D. Wool

154. Dacron (or Treylene) fibres as compared to nylon fibres have_____________________?
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A. All A., B. and C.

B. Better heat & acid resistant properties

C. Poorer resistance to alkalis

D. Poorer dyeability

155. Plastic articles are normally produced by _____________ moulding?
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A. Green sand

B. Shell

C. Injection

D. Dry sand

156. Due to its excellent permeability to air/gas and oxidation resistance, the tubes of automobile tyres is made of________________?
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A. Bunai N

B. Buna S

C. Cold SBR

D. Butyl rubber

157. Polycaprolactam is____________________?
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A. Rayon

B. Nylon-6

C. Dacron

D. Nylon-66

158. Gutta percha rubber is_________________?
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A. Soft & tacky at room temperature

B. A thermosetting resin

C. Recovered by coagulation of rubber latex

D. An isomer of natural rubber

159. Alkyd resin cannot be used for making_________________?
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A. Film forming materials

B. Paint & varnish

C. Fibers

D. Plasticiser

160. Pick out the wrong statement ?
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A. Polythene is a copolymer, while SBR is a homopolymer

B. Protein is a natural polymer

C. Neoprene is a natural rubber

D. Polystyrene is a thermoplastic polymer

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