Which of the following types of carbon consists of one-atom-thick planar sheets of carbons?
A) buckyballs
B) graphene
C) graphite
D) nanotubes
Correct Answer:
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Q32: The polymer segment ~CH₂CH₂CH₂CH₂CH₂CH₂CH₂~ represents
A)polyethylene.
B)polypropylene.
C)polystyrene.
D)polyvinyl chloride.
Q33: Another name for Teflon is
A)LDPE.
B)PVC.
C)PTFE.
D)HDPE.
Q34: One of the problems in the production
Q35: Which of the following statements about the
Q36: Polystyrene is not used for
A)condiment bottles.
B)disposable coffee
Q38: The monomer of polypropylene is
A)CH₂ 
Q39: The development of which polymer enabled the
Q40: HDPE stands for
A)high-density polyethylene.
B)hot-dipped polyethylene.
C)high-dose polyethylene.
D)highly-diffuse polyethylene.
Q41: Natural rubber can be made from the
Q42: This formula in which n can be
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