chemical engineering polymer technology MCQs – Page 4

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 Review each marked answer and report any item that may be outdated or unclear.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

61. Which of the following has the weakest intermolecular forces ?
0

A. Bakelite

B. Polyisoprene

C. Polystyrene

D. Nylon-66

62. Caprolactam, a raw material for the manufacture of nylon-6, is produced from_______________?
0

A. Pyridine

B. Naphthalene

C. Phenol

D. Benzene

63. Transistor parts and refrigerator components are normally made of_____________________?
0

A. Polyurethane

B. High density polythene

C. Polystyrene

D. Polyester

64. Silicone resins, which are highly water repellent and has good heat resistance cannot be used___________________?
0

A. Hydraulic fluid for heat transfer

B. Resin for lamination

C. As room temperature adhesive

D. As grease & lubricant

65. Temperature and gage pressure maintained during the manufacture of hot SBR (styrene butadiene rubber) are____________________?
0

A. 50C and 1 kgf/cm2

B. 250C and 10 kgf/cm2

C. 50C and 3 4 kg/cm2

D. 250C and 1 kgf/cm2

66. Which of the following types of polymers has the strongest inter particle forces ?
0

A. Thermosetting polymers

B. Elastomers

C. Thermoplastics

D. Fibres

67. Epoxy resins (i.e., epoxide polymers) ?
0

A. Are made by addition polymerisation reaction only

B. Contain an epoxy group (fig bellow) at the ends of the polymer

C. Are cross-linked polymers only

D. Use emulsion polymerisation methods

68. Which of the following polymers belong to the class of formaldehyde resin ?
0

A. None of these

B. Dacron

C. Melamine resins

D. Teflon

69. Addition polymerisation is not involved in the manufacture of_______________?
0

A. Polystyrene

B. Poly vinyl chloride

C. Polyhexamethylene adipamide

D. Low density polythene

70. Which of the following is the most important rubber compounding ingredient which is used to improve wearing qualities of both natural rubber & SBR by imparting toughness ?
0

A. Carbon black

B. Rosin

C. Pine oil

D. Phosphorous

71. ______________ resins are produced by the condensation polymerisation of formaldehyde with urea or melamine?
0

A. Amino

B. Epoxy

C. Phenolic

D. Alkyd

72. Polyurethane cannot be used for making____________________?
0

A. Adhesives

B. Bottles

C. Coating material

D. Mattresses & foam

73. Neoprene is the trade name of________________?
0

A. Phenol formaldehyde

B. Polychlorophrene

C. Styrene butadiene rubber (SBR)

D. Polyurethane

74. Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________?
0

A. Engineering plastic

B. Rigid foam

C. Spongy rubber

D. Thermosetting polymer

75. Cation exchange resins used in water treatment is made from _____________ resin?
0

A. Amino

B. Epoxy

C. Urea formaldehyde

D. Phenolic

76. Which of the following polymers has the tendency of decomposing before melting ?
0

A. PVC

B. Nylon

C. None of these

D. Polystyrene

77. Vulcanisation of rubber decreases its__________________?
0

A. Working temperature range

B. Tackiness

C. Resistance to organic solvents

D. Tensile strength

78. Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is_________________?
0

A. Chloroethane

B. Isoprene

C. None of these

D. Chloroprene

79. Thermosetting polymers as compared to thermoplastic polymers_____________________?
0

A. Are formed by addition polymerisation

B. Have linear structure

C. Have three dimensional structure

D. None of these

80. Flexible plastic pipes are made of___________________?
0

A. Unsaturated polyester

B. Low density polyethylene (LDPE)

C. Polypropylene

D. High density polyethylene (HDPE)

Previous Next

Showing 61 to 80 of 286 mcqs