Kevlar is one of the hardest polymer known.The exceptional strength of Kevlar is attributed to
A) amide bonds between the chains that form a sheet-like structure.
B) ester bonds between the chains that form a sheet-like structure.
C) disulfide bonds between the chains that form a sheet-like structure.
D) hydrogen bonds between the chains that form a sheet-like structure.
E) none of the above
Correct Answer:
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Q100: Identify the product of the following reaction.
Q101: What is most widely used plasticizer?
A)epichlorohydrin
B)diphenyl carbonate
C)dimethylterephthalate
D)ethylene
Q102: What are biodegradable polymers? Give an example.
Q103: Which of the following polymers is used
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A)disulfide
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Q109: The first polymer,invented by A.Parke in 1856,was
A)Polyethlene.
B)Polyester.
C)Polystyrene.
D)Celluloid.
E)Teflon.
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A)bisphenol A
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