CHEMl 219l /l CHEM219l Modulel 7:l
(Latestl 2025/l 2026l Update)l Principlesl ofl Organicl Chemistryl W/l Labl |l Questionsl &l Answers|l Gradel A|l 100%l Correctl (Verifiedl Solutions)-l Portagel Learning
Q:l Identifyl eachl ofl thel followingl fivel memberedl aromaticl heterocyclicl
compounds
Answer:
a)l thiophenel b)l furanl c)l pyrrole
Q:l Explainl thel effectl ofl thel presencel ofl thel nitrogenl atoml inl pyridinel whenl thatl moleculel undergoesl EASl reactionsl (asl comparedl tol unsubstitutedl benzene)
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Answer:
Thel nitrogenl makesl thel ringl partiallyl positivel whichl makesl itl notl readyl forl electrophiles.l Thenl EASl isl necessaryl andl willl bel muchl slower.
Q:l Identifyl eachl ofl thel followingl nitrogen-basedl heterocyclesl byl matchingl thel namel tol thel correctl structure
Answer:
B,l C,l A,l D
Q:l Ifl al moleculel containsl twol orl morel ringsl thatl arel joinedl togetherl tol forml al largerl moleculel wherel eachl ringl sharesl twol orl morel commonl atomsl asl al partl ofl thel structurel ofl eachl ring.l Itl isl knownl asl whatl typel ofl system
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