chemical engineering polymer technology Mcqs
101. Dacron is a/an___________________?
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A. Addition polymer

B. Condensation polymer

C. Polyester

D. Both B. and C.
102. Which of the following is generally not used as eord for synthetic rubber tyre casing ?
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A. Dacron

B. None of these

C. Cellulose

D. Nylon

103. Phthalic anhydride is used___________________?
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A. As plasticisers

B. In insecticides manufacture

C. In making PVC

D. For making nylon-6

104. ____________ is a copolymer?
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A. Neoprene

B. None of these

C. Styrene butadiene rubber (SBR)

D. PVC

105. Hot drink (e.g., tea) cups are usually made of _____________________?
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A. Polypropylene

B. Polythene

C. PVC

D. Polystyrene
106. The generic chemical name for the class of polymers which are commercially known as nylons is______________________?
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A. Polyamide

B. Polyolefins

C. Polyacrylate

D. Polyurethane

107. In a linear polymer, the monomeric units are linked together to form long straight chains. The cross linked or branched chain polymers compared to linear polymers have higher ___________________?
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A. Tensile strength

B. Melting point

C. Densities

D. Hardness, rigidity & brittleness
108. Viscose rayon is _______________?
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A. None of these

B. Cellulose nitrate

C. Regenerated cellulose nitrate

D. Regenerated cellulose acetate

109. _____________ tubes are good substitute for human blood vessels on heart by-pass operation?
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A. Polythene

B. PVC

C. Polystyrene

D. Teflon/Dacron
110. Terylene is_________________?
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A. Same as Dacron

B. A polyester

C. Both A. & B.

D. Neither A. nor B.

111. Which of the following is not a polymer of two monomers ?
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A. None of these

B. SBR

C. Bakelite

D. Teflon
112. Most of the plastics are safe to be used upto a maximum temperature of ______________ C?
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A. 150

B. 100

C. 350

D. 450

113. Properties of a polymer is affected by the____________________?
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A. Chain length

B. Intermolecular forces

C. Both A. and B.

D. None of these

114. Thermosetting resins/polymers as compared to thermoplastic ones are ____________________?
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A. Easily reshaped & reused

B. Soluble in all organic solvents

C. More brittle

D. Formed by addition polymerisation only

115. Catalyst used in the production of high density polythene by low pressure Ziegler process is ____________________?
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A. Nickel

B. Molybdenum

C. Aluminium triethyl activated with TiCl4

D. Platinum

116. Most commonly used rubber vulcanisation agent is __________________?
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A. Bromine

B. Alumina

C. Sulphur

D. Platinum

117. Synthetic rubber___________________?
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A. Is softer at higher temperature

B. Is brittle at low temperature

C. Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

D. Deforms, if stretched to double of its original dimension

118. Cellulose is the main constituent of most ______________ fibres?
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A. Acrylic

B. Spandex

C. Synthetic

D. Natural
119. Which of the following is not present in bagasse fiber?
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A. Pentogens

B. Lignin

C. Cellulose

D. None of these
120. Nylon-66 is a polyamide of __________________?
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A. Hexamethylene diamine and adipic acid

B. Vinyl chloride and formaldehyde

C. None of these

D. Adipic acid and methyl amine

121. Commercial production of polypropylene employs _____________ polymerisation?
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A. Suspension

B. Solution

C. Bulk

D. Emulsion

122. Plastic tubes & pipes are generally made by ______________ moulding?
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A. Injection

B. Transfer

C. Extrusion

D. Compression

123. Which of the following is not the commercial name of poly-methyl-methacrylate (PMMA) ?
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A. Lucite

B. Plexiglass

C. Perspex

D. Teflon
124. The physical state in which polymers exist is___________________?
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A. Melts & rubber like state

B. Partially crystalline state

C. All A., B. and C.

D. Amorphous glassy state

125. Terylene is a/an_________________?
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A. Addition polymer

B. None of these

C. Homopolymer

D. Poly amide

126. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their________________?
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A. Molecular sizes

B. wer: Option B

C. Magnitude of intermolecular forces

D. Resistance to heat

E. Polymerisation mechanism

127. _______________ is a copolymer ?
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A. Nylon-66

B. Poly tetra fluoro ethylene

C. PVC

D. Polypropylene

128. Pick out the wrong statement?
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A. Vulcanised rubber is more elastic than natural rubber

B. The intermolecular forces in thermoplastic polymers are intermediate to that of elastomers &

C. Polymers made of more than one monomer is called copolymer or mixed polymer

D. Polymers made of only one monomer is called homopolymer

E. res

129. Branched chair polymers as compared to linear polymers have _________________?
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A. Higher tensile strength

B. None of these

C. Lower density

D. Higher melting point

130. Size range of polymer molecules varies from __________ meter?
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A. 10-2 to 10-5

B. 10-4 to 10-7

C. 10-1 to 10-2

D. 10-8 to 10-10

131. Which of the following is generally not drawn into fiber ?
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A. Polyamide

B. Unsaturated polyesters

C. Saturated polyesters

D. Polyacrylonitrile

132. ______________ is an addition polymer ?
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A. Polythene

B. Bakelite

C. None of these

D. Nylon

133. Buna-N is also called__________________?
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A. Neoprene

B. Nitrile rubber

C. Thiokol

D. Butyl rubber

134. Poly-methyl-methacrylate, which is an acrylic resin, is also called ___________________?
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A. Teflon

B. Plexiglass or Lucite

C. Dacron

D. Thiokol

135. Thermocol is a spongy, porous, rigid or flexible foamed plastic, obtained by blowing gas/air through molten__________________?
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A. Polyurethane

B. Polystyrene

C. Either B. or C.

D. Saturated polyester

136. Polycaprolactam (Nylon 6) is produced by the condensation polymerisation of caprolactam at 240-280C in which the conversion of caprolactam is about ______________ percent?
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A. 99

B. 75

C. 90

D. 50

137. In step growth polymerisation, generally only one type of reaction & some basic mechanism is involved. Step growth polymerisation reaction is not involved in the manufacture of__________________?
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A. Cross linked polystyrene

B. Phenol formaldehyde resins

C. Polyamides

D. Polyesters

138. Polycaprolactam is also known as _________________?
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A. Nylon-66

B. Nylon-6

C. SBR

D. Teflon

139. Collapsible tubes for tooth paste are produced by _____________ extrusion?
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A. Indirect

B. Impact

C. None of these

D. Direct

140. The only natural thermoplastic resin, which is a product of animal life is ____________________?
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A. Copal

B. Shellac

C. Rosin

D. Amber

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