Engineering Materials and Fibers MCQs

By: Prof. Dr. Fazal Rehman | Last updated: November 23, 2024

1. The type of material that expands and contracts in response to an applied electric field is ________
(A).  Smart material
(B). Advanced material
(C).  Biomaterial
(D).  Nanomaterial
(E). None of these
Answer: a

2. _____________ is non-linear material
(A).  Zirconium oxide
(B).  Lithium niobate
(C).  Maghemite
(D).  Magnetite
(E). None of these
Answer: b

3. Not an application of nanomaterials is _________
(A).  TV and computer monitors
(B).   Sunscreens and fuel cells
(C).  Magnetic Resonance Imaging (MRI)
(D). Cardiology
(E). None of these
Answer: d

4. We convert the Terephthalic acid into its dimethyl ester by treating it with which of the following?
(A).  Methyl chloride
(B).  Hydroxylamine
(C).  Methyl alcohol
(D).  Ethylene glycol
(E). None of these
Answer: c

5. Which of the following is the incorrect statement?
(A).  The Orlon is a trade name of the polyacrylonitrile
(B).  The Orlon fibers are always quick drying and resistant to the water
(C).  The Orlon fibers are always less resistant to the acid, gases than the nylon
(D).  The Orlon fibers are always used to manufacture the window shades
(E). None of these
Answer: c

6. The Polyacrylonitrile is always dissolved in its monomer so it is shaped by the bulk casting.
(A ).  True
(B).  False
(E). None of these
Answer: b

7. Nylon-66, PET and PAN all have Tg around how much 0C?
(A).  300
(B).  100
(C).  200
(D).  500
(E). None of these
Answer: b

8. The Hydrogen bonding is responsible for maintaining the alignment of which of the following?
(A).  Stereoregular chains of isotactic polypropylene
(B).  Polyacrylonitrile
(C).  Polyamides
(D).  Polyesters
(E). None of these
Answer: c

9. Which of the following is incorrect statement?
(A).  The Composites are optically opaque materials
(B).  The Processing of composite material is always difficult
(C).  The Re-cyclability of the composite material is always very poor
(D).  The Carbon fiber reinforced composite materials are never used in the space vehicles
(E). None of these
Answer: d

10. The best heat and corrosion resistant material is ___________
(A).  Metals
(B).  Semi-conductors
(C).  Polymers
(D).  Ceramics
(E). None of these
Answer: d

11. Not an inorganic functional material is ______________
(A).  Ferroelectric
(B). Magnetic field sensor
(C).  Reverse micelles
(D).  Light detectors
(E). None of these
Answer: c

12. Based on the important category, concrete and fiber glass are the examples of which of the following?
(A).  Composites
(B).  Polymers
(C).  Ceramics
(D).  Semi-conductors
(E). None of these
Answer: a

13. The Nylon-6 is prepared by the ring opening polymerization of which of the following?
(A).  Amino caproic acid
(B).  Terephthalic acid
(C).  Caprolactum
(D).  Adipic acid
(E). None of these
Answer: b

14. The third step for the synthesis of nylon-6 is ____________
(A).  Ring opening polymerization of caprolactum
(B).  Conversion of cyclohexanone-oxime into caprolactum
(C).  Conversion of cyclohexane into cyclohexanone
(D).  Conversion of cyclohexanone into cyclohexanone-oxime
(E). None of these
Answer: b

15. The cyclohexanone is always converted into the cyclohexanone-oxime by which of the following?
(A).  Reduction
(B).  Treatment with hydroxylamine
(C).  Oxidation
(D).  Backmann rearrangement
(E). None of these
Answer: b

16. The Nylons are very much polar polymers and they have a good hydrocarbon resistance.
(A).  True
(B).  False
(E). None of these
Answer: a

17. We prepare the PET by heating dimethyl terephthalate and ethylene glycol in which of the following?
(A).  Acidic medium
(B).  Basic medium
(C).  Neutral medium
(D).  Water
(E). None of these
Answer: c

18. The type of bonding that maintains the alignment of chains of the polyester is ____________
(A).  Vander Waal’s force
(B).  Dipole-dipole attraction
(C).  Hydrogen bonding
(D).  Covalent bonding
(E). None of these
Answer: b

19. Which of the following is the tensile strength of the fiber?
(A).  Low
(B).  High
(C).  Very Low
(D).  Intermediate
(E). None of these
Answer: b

20. Due to what, the Nylon-6, 6 have application in medicine and pharmacy?
(A).  Toughness
(B).  Sterilability
(C).  Good hydrocarbon resistance
(D).  Elasticity
(E). None of these
Answer: b

21. Not an application of nylon-6, 6 is ___________
(A).  Durable hair combs
(B).  Adhesives
(C).  Tyre cords
(D).  Medicine and pharmacy
(E). None of these
Answer: b

22. What is the other name for dacron?
(A).  Polyethylene terephthalate
(B).  Polyacrylonitrile
(C).  Polyamidenitrile
(D).  Polyethylene caprolactum
(E). None of these
Answer: a

23. Not an application of dacron is _________
(A).  Car heater
(B).  Wide-necked jars for coffee
(C).  Window shades
(D).  Magnetic recording tapes
(E). None of these
Answer: c

24. What is the Acrylonitrile?
(A).  Vinyl cyanide
(B).  Methyl alcohol
(C).  Methyl chloride
(D).  Vinyl cyanide
(E). None of these
Answer: a

25. Which of the following is incorrect statement?
(A).  The polished metal surface always has the dull appearance
(B).  Properties of the metal are degraded instantly with the temperature
(C).  Metals have poor corrosion resistance
(D).  The Metals are very good conductors of heat and electricity
(E). None of these
Answer: a

26. Not an aerospace material is __________
(A).  Plastics
(B).  Polymers
(C).  Aluminium alloys
(D).  Silica
(E). None of these
Answer: b

27. The Nylon-6,6 is made by the condensation polymerization of hexamethylene diamine and adipic acid in how much molar ratio?
(A).  1 : 1
(B).  2 : 3
(C).  3 : 5
(D).  1 : 2
(E). None of these
Answer: a

28. The nylon-6, 6 have high crystallinity that imparts which of the following?
(A).  Low strength
(B).  Toughness and elasticity
(C).  Retention to poor mechanical properties
(D).  Low melting point
(E). None of these
Answer: b

29. Why are Polymers used in the chemical industry?
(A).  Low cost
(B).  Light weight
(C).  Inert nature
(D).  Easiness in fabricability
(E). None of these
Answer: c

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