CENTRAL INSTITUTE OF PLASTICS ENGINEERING & TECHNOLOGY
QUESTION BANK
3 MARK --- QUESTION
4/5 MARK ----QUESTION
Course: DPMT
Subject: Plastics Materials & Testing
Semester – III
1 MARK—QUESTION(MCQ)
-------
1. As molecular weight decreases MFI ______________
(a) increases (b) decreases (c) remains constant (d) none of these
Ans. (a) increases
2. When molecules add on to form polymer without elimination of any small molecules, the process is called______________ polymerization.
(a) Condensation (b) Addition (c) Suspension (d) Ring – Opening
Ans. (b) Addition
3. Which of the following is a thermosetting polymer?
(a) PP (b) PVC (c) Epoxy (d) PS
Ans. (c) Epoxy
4. Polymers having randomly arranged functional groups around the main chain is called
(a) Isotactic polymers (b) Syndiotactic polymers (c) Atactic polymers (d) None of these
Ans. (c) Atactic polymer
5. For symmetrical polymers, Tg = _______ (when temperature is measured in degrees Kelvin)
(a) 2/3 Tm (b) 2 Tm (c) 2/4 Tm (d) ½ Tm
Ans. (d) ½ Tm
6. If crystallinity of a plastic increases _________ decreases
(a) strength (b) melting point (c) transparency (d) none of these
Ans. (c) decreases
7. Chain growth polymerization is another name for __________ polymerization
(a) ring opening (b) condensation (c) addition (d) none of these
Ans. (c) addition
8. Which of the following is a homopolymer?
(a) SAN (b) ABS (c) PP (d) EPDM
Ans. (c) PP
9. Which of the following is prepared by high pressure process?
(a) LDPE (b) PVC (c) HDPE (d) MDPE
Ans. (a) LDPE
10. Density of PVC is _____________ than water.
(a) Higher (b) Lower (c) Same (d) None of these
Ans. (a) Higher
11. Which of the following has highest tensile modulus?
(a) LDPE (b) LLDPE (c) HDPE (d) UHMWPE
Ans. (d) UHMWPE
12. Find out the crystalline material from the following
(a) PS (b) PMMA (c) SAN (d) PP
Ans. (d) PP
13. Which is the hard and brittle material from the following?
(a) PC (b) HDPE (c) PS (d) PTFE
Ans. (c) PS
14. Which polymer exhibits Hinge property?
(a) PE (b) PP (c) PS (d) PMMA
Ans. (b) PP
15. “Poly Vinyl Benzene” is another name of which polymer.
(a) PC (b) PS (c) ABS (d) PMMA
Ans. (b) PS
16. Out of the following select the commodity thermoplastic.
(a) PC (b) ABS (c) LDPE (d) Nylon
Ans. (c) LDPE
17. HIPS is having _______________ times higher impact strength than GPPS.
(a) 20 (b) 10 (c) 7 (d) 2
Ans. (c) 7
18. Glass transition temperature can be determined by ________________.
(a) AAS (b) FTIR (c) DSC (d) VST
Ans. (c) DSC
19. ________ is used in manufacturing of luggage cases-
(a) ABS (b) PS (c) PMMA (d) LDPE
Ans. (a) ABS
20. Which of the following is a styrene based polymer?
(a) PC (b) ABS (c) PVC (d) PMMA
Ans. (b) ABS
21. K- Value of PVC is indicative of its ____________
(a) crystallinity (b) porosity (c) molecular weight (d) none of these
Ans. (c) molecular weight
22. Which type of stabilizers is used for crystal clear PVC products?
(a) TLBS (b) DLBS (c) OTM (d) LS
Ans. (a) TLBS
23. PMMA is in its rubbery state ________.
(a) above 75oC (b) above 85oC (c) above 95oC (d) above 105oC
Ans. (d) above 105oC
24. Among the following which has highest crystallinity?
(a) PS (b) LDPE (c) LLDPE (d) HDPE
Ans. (d) HDPE
25. Which of the following is a chlorine containing polymer?
(a) LDPE (b) PP (c)PC (d) PVC
Ans: (d) PVC
26. Carbonated soft drinks containers are made up of____________.
(a) PC (b) PBT (c) PET (d) Nylon
Ans. (c) PET
27. Overhead water storage tanks are made using ______.
(a) POM (b) PS (c) HDPE (d) None of these.
Ans. (c) HDPE
28. VK Tube process is used for manufacturing of _________________ polymer.
(a) PET (b) Nylon 6 (c) ABS (d) PBT.
Ans. (b) Nylon 6
29. Absorption of water by Nylon depend on___________.
(a) Humidity (b) Crystallanity (c) Permeability (d) Humidity & Crystallinity
Ans. (d) Humidity & Crystallinity
30. LDPE will dissolve in ________
(a) THF (b) Cholorform (c) Acetone (d) Benzene
Ans. (d) Benzene
31. Which of the following is self extinguishing in nature?
(a) PTFE (b) PP (c) PMMA (d) PS
Ans. (a) PTFE
32. Which of the following plastics is used for coating cookware?
(a) PES (b) PEEK (c) PTFE (d) PPO
Ans. (c) PTFE
33. Among the following which has highest density?
(a) PS (b) PTFE (c) LDPE (d) PP
Ans. (d) PTFE
34. Which material is used for making plastic gears and wires?
(a) PEEK (b) PC (c) Nylon 6 (d) PPS
Ans. (c) Nylon 6
LCP stands for____________________
(a) Long crystalline polymer (b) Linear crystal polymer
(c) Liquid crystal polymer (d) none of these
Ans. (c) Liquid Crystal Polymer
35. Pre-drying is required for which of the following polymer.
(a) PP (b) Nylon 6 (c) HIPS (d) SAN
Ans. (b) Nylon 6
36. Which of the following below is a speciality plastic?
(a) PEEK (b) PS (c) POM (d) HDPE
Ans. (a) PEEK
37. Compact Discs (CD) is manufactured using which polymer.
(a) PS (b) PC (c) PET (d) POM
Ans. (b) PC
38. __________ are used in dental applications
(a) acrylics (b) PS (c) PVC (d) PP
Ans. (a) acrylics
39. Write the full form of PEEK.
(a) Poly ethylene ether ketone (b) Poly ethane ethyle ketone
(c) Poly ether ether ketone (d) Poly ethylene ethylene ketone
Ans. (c) Poly ether ether ketone.
40. PPO can be moulded without drying because of
(a) Extremely low moisture absorption (b) Low crystalline
(c) High melting point (d) Having Newtonian viscosity behaviour
Ans. (a) Extremely low moisture absorption
41. Nylon 6 is prepared from
(a) Lactam (b) E- Caprolactum (c) Adipic acid (d) hexamethylene diamine
Ans. (b) E- Caprolactum
42. Which of the following is an example of natural polymer?
(a) PVC (b) ABS (c) PS (d) Cellulose
Ans. (d) Cellulose
43. Which material is used for making pipes for gas transportation application?
(a) HDPE (b) PVC (c) PP (d) MDPE
Ans. (d) MDPE
44. PHILLIPS process is used in manufacturing of ________________.
(a) PE (b) ABS (c) PMMA (d) Teflon
Ans. (a) PE
45. Which of the following is an example of a miscible blend
(a) ABS/PC (b) PPO/PS (c) PP/Nylon 6 (c) none of these
Ans. (b) PPO/PS
46. Which of the following fiber is used in high temperature composite application?
(a) Jute fiber (b) Polyethylene fiber (c) Carbon fiber (d) Kenaf fiber
Ans. (c) Carbon fiber
47. Miscible blend of two component systems exhibits ______ Tg value.
(a) Single (b) Double (c) Triple (d) None
Ans. (a) Single
48. Which of the following is not used for compounding of polymer?
(a) Two roll Mixer (b) Banbury Mixer (c) Twin Screw Extruder (d) Compression Moulding
Ans. (d) Compression Moulding
49. The immiscible blends exhibit
(a) Excellent mechanical properties (b) Poor mechanical properties
(c) Poor chemical properties (d) Intermediate chemical properties
Ans. (b) Poor mechanical properties
50. EPDM stands for ______________________________.
(a) ethylene propylene di methane (b) ethylene propylene diene momomer
(c) ethylene propane diamino monomer (d) none of these.
Ans. (a) ethylene propylene diene monomer
51. Bakelite is ....... resin
a) Urea Formaldehyde (b) Phenol Formaldehyde (c) Melamine Formaldehyde (d) Epoxy resin
Ans: (b) Phenol Formaldehyde
52. The ratio of Phenol to Formaldehyde in Novolaks is
(a) 1:1.5 (b) 1:2 (c) 1.5:1 (d) 1:0.8
Ans: (d) 1:0.8
53. The ratio of Phenol to Formaldehyde in Resol is
(a) 1:1.5 (b) 1:2.5 (c) 1.5:1 (d) 1:0.8
Ans: (a) 1:1.5
54. In UF resin, the monomers used are
(a) Phenol & Formaldehyde (b) Melamine & Formaldehyde
(c) Urea & Fomaldehyde (d) Urea & Melamine
Ans: (c) Urea & Fomaldehyde
55. Which resin is preferred for making best quality non-breakable dinnerware?
(a) PF (b) MF (c) UF (d) none of these
Ans: (b) MF
56. The major application area of UF moulding power is
(a) Automobile (b) Agricultural (c) Electrical & Electronics (d) none of these
Ans: (c) Electrical & Electronics
57. MF resin has the hardness in Rockwell Scale
(a) M-90 to110 (b) M-120 to110 (c) M-115 to125 (d) M-80 to 90
Ans: (c) M-115 to125
58. The continuous service temperature for MF resin is
(a) 90°C (b) 110°C (c) 70°C (d) 150°C
Ans: (a) 90°C
59. Out of the following _____________________is a thermoset material.
(a) Cellulose Nitrate (b)HDPE (c) Epoxides (d) Nylon
Ans: (c) Epoxides
60. Unsaturated polyester system based on Nadic anhydride shows good __________ property.
(a) Water absorption (b) Heat resistance (c) Self-extinguishing (d) Weather resistance
Ans: (b) Heat resistance
61. The diluent used in Unsaturated polyester is
(a) Styrene monomer (b) Toluene (c) CCl4 (d) Methanol
Ans: (a) Styrene monomer
62. The UV stabilizer used in Unsaturated polyester is
(a) Methyl methacrylate (b) Styrene (c) Phthalic anhydride (d) Benzophenone
Ans: (d) Benzophenone
63. The full form of BOPP is ____________________________________________.
(a) Bi-oxygenated Polypropylene (b) Biaxially oriented Polypropylene
(c) Bis-oxygenated Polypropylene (d) None of these
Ans: (b) Biaxially oriented Polypropylene
64. Epoxy resin is also known as
(a) Oxirane resin (b) ER (c) Bis-phenole resin (d) Benzophenone
Ans: (a) Oxirane resin
65. Which thermosetting polymers is widely used as potting and encapsulating materials
(a) Epoxy (b) Polyurethane (c) MF (d) None of these
Ans: (a) Epoxy
66. _________ and _____ monomer are used for manufacturing general purpose epoxy resin
(a) Urea & Formaldehyde (b) Urea & Melamine (c) Bis-phenol A & Formaldehyde (d) Bisphenol A & Epichlorohydrin
Ans: (d) Bis-phenol A & Epichlorohydrin
67. Mention one cuing agent for epoxy resin
(a) Ethylene diamine (b) Styrene (c) Methyl methacrylate (d) Dicumyl peroxide
Ans: (a) Ethylene diamine
68. Which thermosetting polymers is widely used as potting and encapsulating materials
(a) Epoxy (b) Polyurethane (c) MF (d) None of these
Ans: (a) Epoxy
69. RIM technology is used for the _________thermoset resin.
(a) Epoxy (b) Polyurethane (c) PF (d) UF
Ans: (b) Polyurethane
70. Name one polyether used for manufacturing Polyurethane Foam
(a) Propylene oxide (b) Phthalic Acid (c) Adipic acid (d) carbonic acid
Ans: (a) Propylene oxide
71. The polymer consisting of silicon-oxygen-silicon main chain known as
(a) Oxirane resin (b) Polyurethane (c) Silicone (d) Poly(phenyl oxide)
Ans: (c) Silicone
72. Hexa (Hexamethylenetetramine) is a _____________________________
(a) Hardener (b) Foaming agent (c) Flame retardant (d) Extender
Ans: (a) Hardener
73. MFI is ______________________to viscosity.
(a) Inversely proportional to viscosity (c) Directly proportional to viscosity
(b) Inversely proportional to apparent density (d) none of these
Ans: (a) Inversely proportional to viscosity
74. _______________is defined as a gradual decrease in stress with time under a constant
deformation.
(a) Rheology (b) Stress relaxation (c) Stress deformation (d) Fatigue
Ans: (b)Stress relaxation
75. Unit of Volume Resistivity is _______________.
(a) Mm/min (b) volt /mm (c) Ω-cm (d) sec
Ans: (c) Ω-cm
76. If the amount of transmitted light is deviated_______________ from the incident beam, the
light flux is considered to be haze.
(a) less than 1.50 (b) less than 2.50 (c) more than 1.50 (d) more than 2.50
Ans: (d) more than 2.50
77. _______________is the test method for tensile properties.
(a) ASTM D-638 (b) ASTM C-257 (c) ASTM D-1003 (d) ASTM D-790
Ans: (a) ASTM D-638
78. The depth of notch in the specimen for Izod Impact Strength test as per ASTM is
(a) 2.10 mm (b) 2.54 mm (c) 2.0 mm (d) 2.35 mm
Ans: (b) 2.54 mm
79. For measuring the MFI of HDPE material, the used temperature is
(a) 230 °C (b)190 °C (c) 110 °C (d) None of these
Ans: (b) 190 °C
80. PVC can be identified by the copper wire test which indicates the presence of ___________
(a) Bromine (b) Chlorine (c) Iodine (d) none of these
Ans: (b) Chlorine
81. The melt density of polyethylene as per ASTM is ___________
(a)0.7386 g/cc (b) 0.7636 g/cc (c) 0.7352 g/cc (d) none of these
Ans: (b) 0.7636 g/cc
82. The deflection of standard bar in HDT test is_________________________.
(a) 0.001 inch (b) 0.010 inch (c) 0.10 inch (d) none of these
Ans: (b) 0.010 inch
83. ----------- is unit of compressive strength.
(a) lb/inch2
(b) N/m (c) inch (d) mm
Ans: (a) lb/inch2
84. The solvent for Polyethylene material is ___________.
(a) p-Xylene (b) formic acid (c) cyclohexanone (d) none of these
Ans: (a) p-Xylene
85. To check batch-to-batch uniformity of polymers which of the following is measured.
(a) Molecular Weight (b) MFI (c) HDT (d) none of these
Ans: (b) MFI
86. The heating rate followed in VST test is_________________________.
(a)2 ± 0.2°C/min (b) 50± 5 °C/ hr (c) 60 ±5°C/hr (d) 5±0.5°C/min
Ans: (b) 50 ± 5 °C/hr
87. Expand IEC
(a) International Electromechanical Commission (b) International Electrooptical Commission
(c) International Electrochemical Commission (d) International Electroelectrical Commission.
Ans: (c) International Electrochemical Commission
88. The behaviour of material subjected to repeated cyclic loading in terms of flexing, stretching,
compressing or twisting is called as ---------
(a)Abrasion (b) Flexural (c) Fatigue (d) Tear
Ans: (c) Fatigue
89. Dumbbell shaped test specimens are preferred for _____________Test.
(a) Tensile (b) Flexural (c) Izod Impact (d) Charpy Impact
Ans.: a) Tensile
90. ----------is the stress at which a material exhibits a specified limiting deviation from the
proportionality of stress to strain.
(a)Tensile strength (b) Flexural strength (c) Yield strength (d) Compressive strength
Ans: (c) Yield strength
91. Which of the following is not the unit of Tensile Modulus?
(a) Kg/cm² (b) N/mm² (c) MPa (d) KJ/m²
Ans: (d) KJ/m
92. Refractive index is the ratio of the velocity of light in ------- to its velocity in transparent
medium?
(a)Solid (b) Water (c) Gas medium (d) Vacuum
Ans: (d) Vacuum
93. --------- is commonly used for measurement of polymer solution viscosities.
(a)UTM (b) TGA (c) VSP & HDT (d) Capillary viscometer
Ans: (d) Capillary viscometer.
94. Copper wire test is carried out for identification of --------------
(a) PET (b) PP (c) PVC (d) PE
Ans: (c) PVC
95. PP & PE sink do not water because their _________ is lower than that of water .
(a) molecular weight (b) crystallinity (c) density (d) none of these
Ans: (c) density
96. Simple identification techniques of plastics can be further confirmed by ------------------
(a) Melting point test (b) HDT (c) Tensile test (d) Haze
Ans: (a) Melting point test
97. Flexural strength and modulus values are ------------- with temperature.
(a) Directly proportional (b) Inversely proportional (c) Remain Constant (d) Not related
Ans: (b) inversely proportional
98. ----------- is unit of viscosity.
(a) Poises (b) MPa (c) oC (d) kg/cm2
Ans: (a) Poises
99. Type A durometer is used for relatively __________ material.
(a) Hard (b) Soft (c) Rigid (d) None of these
Ans: (b) Soft
100. _______________is the test method for arc resistance.
(a) ASTM D-495 (b) ASTM C-486 (c) ASTM D-256 (d) ASTM D-1238
Ans: (a) ASTM D-495
.webp)
Thanks for the messages.