Carbon
Alkylated diphenyl amine
Thiokol
Magnesium
✅ The correct answer is option B.
Polymer Technology MCQs
122. Pick out the correct statement.
Plastics are good conductors of heat and electricity.
All the polymers are highly crystalline in nature
Polymers can be vaporised by heating to a very high temperature.
The liquid polymer becomes greasy, then waxy and finally solid on increasing the degree of polymerisation.
✅ The correct answer is option D.
123. Bristles of tooth brushes are made of
nylon-6
nylon-66
polystyrene
PVC
✅ The correct answer is option B.
124. Glyptal used in the manufacture of paints & lacquers is a __________ polymer.
polyamide
polystyrene
polyester
polyacrylonitrile
✅ The correct answer is option C.
125. Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their
molecular sizes.
magnitude of intermolecular forces.
resistance to heat.
polymerisation mechanism.
✅ The correct answer is option B.
126. Polyurathane can not be used for making
mattresses & foam
coating material
adhesives
bottles
✅ The correct answer is option D.
127. The organic acid monomer in nylon 66 is
sebasic acid
terephthalic acid
adipic acid
benzoic acid
✅ The correct answer is option C.
128. Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to
protect rubber goods from attack by oxygen & ozone present in the atmosphere.
reduce its viscosity to permit easier processing.
reduce the time of vulcanisation and quantity of vulcanising agent.
increase its viscosity.
✅ The correct answer is option B.
129. Low density polythene as compared to high density polythene is
harder
tougher
chemically inert
more flexible
✅ The correct answer is option D.
130. Lavatory cisterns are normally made of
expanded polystyrene
saturated polyester
perspex
PVC
✅ The correct answer is option A.