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Total Questions : 1113 | Page 4 of 112 pages
Question 31. Density of low density polythene is about __________ gm/c.c.
  1.    0.38
  2.    0.56
  3.    0.81
  4.    0.91
 Discuss Question
Answer: Option D. -> 0.91
Question 32. Neoprene is a
  1.    Monomer
  2.    Synthetic rubber
  3.    Polyester
  4.    None of these
 Discuss Question
Answer: Option B. -> Synthetic rubber
Question 33. Neoprene is the trade name of
  1.    Polyurethane
  2.    Phenol formaldehyde
  3.    Polychlorophrene
  4.    Styrene butadiene rubber (SBR)
 Discuss Question
Answer: Option C. -> Polychlorophrene
Question 34. In a cross linked polymer, the monomeric units are linked together to constitute a three dimensional network. Which of the following is a cross-linked polymer?
  1.    Bakelite (phenol formaldehyde)
  2.    Polyester
  3.    Polythene
  4.    Nylon-6
 Discuss Question
Answer: Option A. -> Bakelite (phenol formaldehyde)
Question 35. Which of the following is generally not drawn into fibre?
  1.    Polyamide
  2.    Unsaturated polyesters
  3.    Saturated polyesters
  4.    Polyacrylonitrile
 Discuss Question
Answer: Option B. -> Unsaturated polyesters
Question 36. Automobile steering wheels are normally made of
  1.    Cellulose acetate
  2.    Cellulose nitrate
  3.    PVC
  4.    High density polythene
 Discuss Question
Answer: Option A. -> Cellulose acetate
Question 37. Which of the following is not a thermoplastic material?
  1.    Epoxy polymer
  2.    PVC
  3.    Polystyrene
  4.    Polythene
 Discuss Question
Answer: Option A. -> Epoxy polymer
Question 38. Main constituent of natural rubber is
  1.    Polystyrene
  2.    Polyisoprene
  3.    Polybutadiene
  4.    Poly chloroprene
 Discuss Question
Answer: Option B. -> Polyisoprene
Question 39. Which of the following is not present in bagasse fibre?
  1.    Cellulose
  2.    Lignin
  3.    Pentogens
  4.    None of these
 Discuss Question
Answer: Option D. -> None of these
Question 40. Diphenylamine is added to rubber to
  1.    Valcanise it
  2.    Protect it from deterioration on exposure to air
  3.    Make it non-inflammable
  4.    Make it thermosetting
 Discuss Question
Answer: Option B. -> Protect it from deterioration on exposure to air

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