21.What is an acceptable name of the following compound?
22.How many constitutional isomers are possible when there are three identical substituents on a benzene ring?
23.Which of the following is a correct IUPAC name?
24.Which of the following is a correct IUPAC name?
25.What is the IUPAC name for the following compound?
26.Which of the following statements is false?
a.Anthracene is a polycyclic aromatic hydrocarbon.
b.Benzo[a]pyrene is a carcinogenic polynuclear aromatic hydrocarbon.
c.The most common polycyclic aromatic hydrocarbons are found in natural gas.
d.Naphthalene was once used as mothballs.
27.Which of the following is a polynuclear aromatic hydrocarbon with three rings in a linearly fused arrangement?
28.The structure of benzo[a]pyrene has how many 6-membered rings?
29.Which of the following structures represents 2,4,6-tribromophenol?
30.Which of the following structures represents m-nitrobenzoic acid?
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