Polymerization, Polymer Blends, and Polymeric Composites MCQs Questions Answers
Cross-linked polymers are swollen with a different monomer, which results in which one?
(A). Â Mechanical blends
(B). Â Chemical blends
(C). Â Latex blends
(D). Â Solution-cast blends
(E). None of these
Multiple Choice Question Answer:Â b
Polymers are dissolved in a common solvent for giving which one?
(A). Â Solution-cast blends
(B). Â Mechanical blends
(C). Â Latex blends
(D). Â Chemical blends
(E). None of these
Multiple Choice Question Answer: Â a
Mixing leads to the formation of which one, for amorphous and semi-crystalline polymers?
(A). Â Chemical blends
(B). Â Solution-cast blends
(C). Â Latex blends
(D). Â Mechanical blends
(E). None of these
Multiple Choice Question Answer: Â d
which of the following is the physical mixture of two or more polymers that are not linked by covalent bonds?
(A). Â Polymerisation
(B). Â Polyblend
(C). Â Dendrimer
(D). Multi blend
(E). None of these
Multiple Choice Question Answer:Â b
which of the following is the immiscible blends exhibit?
(A). Â Excellent mechanical properties
(B). Â Poor chemical properties
(C). Â Poor mechanical properties
(D). Â Intermediate chemical properties
(E). None of these
Multiple Choice Question Answer: Â c
_________is incorrect.
(A). Â between those of individual components immiscible blends exhibit a single glass transition temperature (Tg) intermediate
(B). Â Immiscible blend is usually opaque
(C). Â Miscible blend is usually clear
(D).  characteristics of every component immiscible blends exhibit separate Tg’s
(E). None of these
Multiple Choice Question Answer: Â a
which of the following is the blend is said to be synergistic for the mechanical property if the term (I) in the empirical formula?
(A). Â Zero
(B). Â Negative
(C). Â Positive
(D). Â Imaginary
(E). None of these
Multiple Choice Question Answer: Â c
which of the following is the blend is said to be additive for the mechanical property if the term (I) is in the empirical formula?
(A). Â Imaginary
(B). Â Zero
(C). Â Negative
(D). Â Positive
(E). None of these
Multiple Choice Question Answer: Â b
Multiple Choice Question Answer: Â b
In the water are mixed and coagulated to give which one fine dispersions of polymers?
(A). Â Mechanical blends
(B). Â Solution-cast blends
(C). Â Chemical blends
(D). Â Latex blends
(E). None of these
Multiple Choice Question Answer:Â d
Polymer Classification
The polymer does not possess any strength and exists either as liquid resin or friable powder below the threshold degree of polymerization (DP )
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer:Â a
which of the following are the small molecules which combine to form a polymer?
(A). Â Resins
(B). Â Monomers
(C). Â Plastic
(D). Â Blocks
(E). None of these
Multiple Choice Question Answer: Â b
_______is incorrect?
(A). Â polymers are also called macro-molecules due to their small size
(B ). Â polymers are called resins when in a form ready for further working
(C). Â in the polymer is called the degree of polymerization the number of monomeric units contained
(D). Â as polymerization, the chemical process leading to the formation of polymer is known
(E). None of these
Multiple Choice Question Answer: Â a
which of the following is the polymer is any substance made up of many repeating units?
(A). Mere
(B). Â Resins
(C). Â Plastic
(D). Â Blocks
(E). None of these
Multiple Choice Question Answer:Â a
_________ is not an example of semi-crystalline polymer.
(A). Â HDPE
(B). Â Nylon
(C). Â Polyesters
(D). Â LDPE
(E). None of these
Multiple Choice Question Answer:Â d
which of the following is the functionality of ethylene glycol?
(A). Â 4
(B). Â 2
(C). Â 3
(D). Â 5
(E). None of these
Multiple Choice Question Answer: Â b
________ polymer is not classified under the category of configuration.
(A ). Â Atactic
(B). Â Cross-linked
(C). Â Syndiotactic
(D). Â Isotactic
(E). None of these
Multiple Choice Question Answer: Â b
Which of the following is the optimum DP value of cellulose?
(A). Â 150
(B). Â 500
(C). 250
(D). Â 400
(E). None of these
Multiple Choice Question b
Styrene acrylonitrile is an example of which one?
(A). Â Linear polymer
(B). Â Homopolymer
(C). Â Amorphous polymer
(D). Â Co-polymer
(E). None of these
Multiple Choice Question Answer: Â d
________ polymer is not classified under the category of end use.
(A). Â Synthetic
(B). Â Fibers
(C). Â Elastomers
(D). Â Adhesives
(E). None of these
Multiple Choice Question Answer: Â a
_______ is incorrect.
(A). Â in any solvent thermosets are generally insoluble
(B). Â cross-linked network structure thermosets have 3-D
(C). Â by condensation polymerisation reactions thermosets are formed
(D). Â Thermosets stiffen on cooling and soften on heating
(E). None of these
Multiple Choice Question Answer: Â c
_______ is not an example of thermoplastic?
(A). Â Polyvinyl chloride
(B). Epoxy
(C). Â Nylon
(D). Â Polyesters
(E). None of these
Multiple Choice Question Answer: Â b
Which of the following is the weight average molecular weight for PP given its degree of polymerization as 10,000?
(A). Â 3,00,000 gm/mol
(B). Â 4,20,000 gm/mol
(C). Â 6,70,000 gm/mol
(D). Â 8,40,000 gm/mol
(E). None of these
Multiple Choice Question Answer: Â b
The cryoscopy refers to which one?
(A). Â Osmotic pressure measurement
(B). Â Elevation in boiling point measurement
(C). Â Freezing point depression measurement
(D). Â Increase in solubility measurement
(E). None of these
Multiple Choice Question Answer: Â c
Higher molecular weight polymers are more heat resistant and tougher.
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer: Â a
__________ is not a property of matrix materials which are modified by adding particulate fillers.
(A). Â Modification in electrical conductivity
(B). Â Improved performance at elevated temperature
(C). Â Decrease in surface hardness
(D). Â Improved abrasion resistance
(E). None of these
Multiple Choice Question Answer: Â c
_______ is not combine with fiber to give composites.
(A). Â Non-metals
(B). Â Metals
(C). Â Ceramics
(D). Â Polymers
(E). None of these
Multiple Choice Question Answer:Â a
_____________ is the aspect ratio.
(A). Â Diameter to length ratio
(B). Â Length to depth ratio
(C). Â Length to diameter ratio
(D). Â Depth to length ratio
(E). None of these
Multiple Choice Question Answer: Â c
The environmental resistance of the composites the matrix phase controls.
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer: Â a
_____is incorrect.
(A). None of these
(B). Â by a layer of less dense core material sandwich panels consist of two stronger outer sheets separated
(C). Â 2-D sheets that are stacked and subsequently cemented together laminar composites consist of
(D). Â as the core thickness increases the stiffness of the sandwich panel increases
(E). Â Core material should be low corrosion and heavy-weight resistance
Multiple Choice Question Answer: Â e
to the which of core thickness, the flexural stiffness of the sandwich panel is proportional?
(A). Â Cube
(B). Â Square
(C). Â Inverse
(D). Â Square root
(E). None of these
Multiple Choice Question Answer: Â a
______ is not an application of a sandwich panel.
(A). Â Fabrication of wings of aircrafts
(B). Â Design of ships, boat hulls
(C). Â Conveyor belts
(D). Â Fabrication of roofs, floors and walls of buildings
(E). None of these
Multiple Choice Question Answer: Â c
Which of the following is one of the most popular types of core material used?
(A). Â Metal foam
(B). Â Glass
(C). Â Plastic
(D). Â Honeycomb
(E). None of these
Multiple Choice Question Answer:Â d
______ is not a characteristic of glass-fiber reinforced composites.
(A). Â Low density
(B). Â Low impact resistance
(C). Â High tensile strength
(D). Â Excellent chemical and corrosion resistance
(E). None of these
Multiple Choice Question Answer: Â b
Which of the following are the resultant composites when fibers are used as a dispersed phase for the reinforcement of matrices?
(A). Â Glass-fiber reinforced
(B). Â Carbon-fiber reinforced
(C). Â Wood-fiber reinforced
(D). Â Unidirectional-fiber reinforced
(E). None of these
Multiple Choice Question Answer:Â a
______ is an application of glass-fiber reinforced composites.
(A). Â Automotive parts
(B). Â Conveyor belts
(C). Â Adhesives
(D). Â Design of ships
(E). None of these
Multiple Choice Question Answer: Â a
____________ is used as reinforcement in advanced polymer matrix composite.
(A). Â Glass-fiber reinforced
(B). Â Carbon-fiber reinforced
(C). Â Wood-fiber reinforced
(D). Â Unidirectional-fiber reinforced
(E). None of these
Multiple Choice Question Answer: Â b
consumer products and industrial and scientific equipment the principal applications of composites are in transportation industry
(A). Â True
(B). Â False
(E). None of these
Multiple Choice Question Answer: Â a
__________ is not an advantage of composites.
(A). Â Easy to manufacture and durable
(B). Â mechanical and chemical properties Excellent thermal
(C). Â Heavy-weight and non-versatile
(D). Â Economical and tailor made
(E). None of these
Multiple Choice Question Answer:Â c
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