JEE Main Chemistry question
How many of the following compounds are both heterocyclic and aromatic in nature: thiophene, piperidine, anthracene, pyrrole, furan, annulene, aniline, phenanthrene, pyridine?
Answer: 4
Solution
Thiophene, pyrrole, furan and pyridine each contain a heteroatom within an aromatic ring. Piperidine is heterocyclic but fully saturated (not aromatic); anthracene and phenanthrene are aromatic but purely carbocyclic;
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