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
2. : _____________ is a non-linear material
(A) Zirconium oxide
(B) Lithium niobate
(C) Maghemite
(D) Magnetite
3. : Not an application of nanomaterials is
(A) TV and computer monitors
(B) Sunscreens and fuel cells
(C) Magnetic Resonance Imaging (MRI)
(D) Cardiology
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
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
6. : Nylon-66, PET and PAN all have Tg around how much °C?
(A) 300
(B) 100
(C) 200
(D) 500
7. : 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
8. : 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
9. : The best heat and corrosion resistant material is
(A) Metals
(B) Semi-conductors
(C) Polymers
(D) Ceramics
10. : Not an inorganic functional material is
(A) Ferroelectric
(B) Magnetic field sensor
(C) Reverse micelles
(D) Light detectors
11. : 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
12. : 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
13. : 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
14. : 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
15. : 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
16. : 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
17. : Which of the following is the tensile strength of the fiber?
(A) Low
(B) High
(C) Very Low
(D) Intermediate
18. : Due to what, the Nylon-6,6 have application in medicine and pharmacy?
(A) Toughness
(B) Sterilability
(C) Good hydrocarbon resistance
(D) Elasticity
19. : Not an application of nylon-6,6 is
(A) Durable hair combs
(B) Adhesives
(C) Tyre cords
(D) Medicine and pharmacy
20. : What is the other name for dacron?
(A) Polyethylene terephthalate
(B) Polyacrylonitrile
(C) Polyamidenitrile
(D) Polyethylene caprolactum
21. : Not an application of dacron is
(A) Car heater
(B) Wide-necked jars for coffee
(C) Window shades
(D) Magnetic recording tapes
22. : What is the Acrylonitrile?
(A) Vinyl cyanide
(B) Methyl alcohol
(C) Methyl chloride
(D) Vinyl cyanide
23. : 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
24. : Not an aerospace material is
(A) Plastics
(B) Polymers
(C) Aluminium alloys
(D) Silica
25. : 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
26. : 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
27. : Why are Polymers used in the chemical industry?
(A) Low cost
(B) Light weight
(C) Inert nature
(D) Easiness in fabricability