chemical engineering polymer technology MCQs – Page 3

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 Review each marked answer and report any item that may be outdated or unclear.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

41. Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from ______________ resins?
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A. Urea formaldehyde

B. Epoxy

C. Melamine formaldehyde

D. Phenol formaldehyde

42. A copolymer of vinyl and vinylidene chloride is called_____________________?
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A. Treylene

B. Orlon

C. Dacron

D. Saran

43. Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ?
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A. Thiokol

B. Carbon

C. Magnesium

D. Alkylated diphenyl amine

44. The conversion of caprolactam in the above case is about ____________ percent?
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A. 90

B. 25

C. 50

D. 70

45. Glyptal used in the manufacture of paints & lacquers is a _____________ polymer?
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A. Polyacrylonitrile

B. Polyamide

C. Polystyrene

D. Polyester

46. Nylon-6 as compared to nylon 66 has lower ?
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A. Adhesion to rubber

B. Thermal stability

C. Abrasion resistance

D. Hardness

47. Ebonite is a/an___________________?
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A. Unvulcanised raw rubber

B. Highly vulcanised rubber

C. Natural rubber

D. Adhesive

48. Orlan fibre which is used as a wool substitute is __________________?
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A. Poly-methyl-methacrylate (PMMA)

B. A natural polymeric fibre

C. Polyacrylonitrile

D. An amorphous polymer

49. Low pressure Zeigler process of polythene manufacture____________________?
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A. Achieves an yield of 95-98% based on ethylene

B. Employs a pressure of 30 kgf/cm2

C. Produces very low density polythene

D. Does not use any catalyst for polymerisation

50. Condensation polymerisation of _____________ produces Bakelite?
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A. Urea & formaldehyde

B. Phenol & acetaldehyde

C. Propylene

D. Phenol & formaldehyde

51. The monomer for the production of neoprene rubber is_________________?
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A. Acetylene

B. None of these

C. Isoprene

D. Chloroprene

52. 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 ?
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A. Polyester

B. Nylon-6

C. Polythene

D. Bakelite (phenol formaldehyde)

53. The synthetic fibres produced from _____________ are known as rayon?
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A. Ethylene glycol

B. Cellulose

C. Lignin

D. Polyamides

54. SBR is produced by the copolymerisation of butadiene & styrene by employing emulsion polymerisation. The weight ratio of styrene and butadiene is maintained at_________________?
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A. 1:02

B. 2:01

C. 3:01

D. 1: 3

55. Polythene is a/an________________?
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A. Addition polymerisation product

B. Thermosetting material

C. Condensation polymerisation product

D. None of these

56. Identify the group in which all the polymers mentioned can be used to make fibres ?
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A. Cellulose derivatives, Polyisoprene, Polyethylene

B. Polypropylene, Poly vinyl chloride, Silicon

C. Cellulose derivatives, Polyamides, Polyurethane

D. Butadiene copolymers, Polyamides, Urea-formaldehyde

57. ______________are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol) ?
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A. Saturated polyester

B. Unsaturated polyester

C. Amino resins

D. Alkyd resins

58. Nylon-6 is manufactured from _______________?
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A. Caprolactam

B. Maleic anhydride and Hexamethylenediamine

C. Adipic acid and Hexamethylenediamine

D. Sebacic acid and Hexamethylenediamine

59. Addition of stabiliser during PVC manufacture is done to________________?
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A. Prevent its thermal degradation

B. Reduce the melt viscosity & glass transition temperature

C. Improve its elasticity

D. Improve its impact strength

60. Teflon is__________________?
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A. Polytetrafluroethylene (PTFE)

B. An inorganic polymer

C. Phenol formaldehyde

D. A monomer

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