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IUPAC Nomenclature and Structural Isomerism
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Counting structural isomers
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Difficulty 1 of 3
nm170
The number of aromatic (benzene ring containing) structural isomers of
C
X
8
H
X
10
is
A
2
B
4
C
3
D
5
Answer: B
Ethylbenzene plus o-, m- and p-xylene (dimethylbenzenes). That is 4.
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