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MCQs

Total Questions : 1113 | Page 11 of 112 pages
Question 101. Poly tetra flouro ethylene (PTFE) is known as
  1.    Dacron
  2.    Teflon
  3.    Bakelite
  4.    Celluloid
 Discuss Question
Answer: Option B. -> Teflon
Question 102. 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
  1.    Polyvinyl alcohol
  2.    Polyvinyl acetale
  3.    Polyvinyl butyral
  4.    PVC
 Discuss Question
Answer: Option C. -> Polyvinyl butyral
Question 103. Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the
  1.    Electrical insulation purpose
  2.    Tanning of leather
  3.    Strengthening of plaster of paris
  4.    Decorative laminates
 Discuss Question
Answer: Option C. -> Strengthening of plaster of paris
Question 104. Liners of bags are usually made of
  1.    Polythene
  2.    PVC
  3.    Polypropylene
  4.    Polyesters
 Discuss Question
Answer: Option C. -> Polypropylene
Question 105. Visco-elastic behaviour exhibited by plastics is a __________ like behaviour.
  1.    Solid
  2.    Liquid
  3.    Combination of solid & liquid
  4.    Neither solid nor liquid
 Discuss Question
Answer: Option C. -> Combination of solid & liquid
Question 106. Styrene butadiene rubber is commercially manufactured by
  1.    Bulk polymerisation
  2.    Suspension polymerisation
  3.    Solution polymerisation
  4.    Emulsion polymerisation
 Discuss Question
Answer: Option D. -> Emulsion polymerisation
Question 107. Pick out the wrong statement.
  1.    For the manufacture of styrene, the major raw materials are benzene and ethylene
  2.    One inportant copolymer of styrene is SBR, which is widely used in the manufacture of automobile tyres
  3.    Manufacture of phenol by chloroben-zene-eaustic process involves. The chlorination of benzene, causticisation and hydrolysis
  4.    Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available
 Discuss Question
Answer: Option D. -> Phenol manufacture by chlorobenzene-caustic process is competitive even when low cost chlorine is not available
Question 108. Styrene which is a monomer for the production of polystyrene, is commercially produced by the
  1.    Catalytic dehydrogenation of ethyl benzene
  2.    Dehydration of ethyl alcohol followed by hydrogenation
  3.    Reacting ethylene oxide with acetal-dehyde
  4.    Fermentation of starch
 Discuss Question
Answer: Option A. -> Catalytic dehydrogenation of ethyl benzene
Question 109. Which of the following is not a condensation polymer?
  1.    Bakelite
  2.    Melamine polymer
  3.    Polymethylmethacrylate (PMMA)
  4.    None of these
 Discuss Question
Answer: Option C. -> Polymethylmethacrylate (PMMA)
Question 110. Bristles of tooth brushes are made of
  1.    Nylon-6
  2.    Nylon-66
  3.    Polystyrene
  4.    PVC
 Discuss Question
Answer: Option B. -> Nylon-66

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