This section challenges students with complex, multi-step, and high-level problems involving functional groups and systematic nomenclature. It is designed for advanced Class 11–12 learners, JEE Advanced aspirants, and undergraduate students who aim to master the most difficult and conceptually demanding questions.
In this section, you will solve:
Identification of multiple functional groups in intricate molecular structures
IUPAC naming of highly substituted, branched, and polyfunctional compounds
Problems involving conflicting priority rules and nomenclature exceptions
Structure determination from given IUPAC names and vice versa
Reaction-based problems requiring functional group transformation and renaming
Combined problems linking nomenclature with isomerism and reactivity
Exam-level challenge problems and previous-year difficult questions
The problems are structured to develop deep conceptual clarity, enhance logical sequencing, and strengthen the ability to handle tricky and time-intensive organic chemistry questions.
Mastering this section will ensure accuracy and confidence while solving the most challenging functional group and nomenclature problems in competitive exams and undergraduate assessments.
Q. What is the correct IUPAC name for the compound with the structure CH3-CH2-COOH?
A.
Propanoic acid
B.
Butanoic acid
C.
Acetic acid
D.
Isobutyric acid
Solution
The compound has three carbon atoms in the longest chain and a carboxylic acid functional group, making it propanoic acid.
Q. What is the IUPAC name for the compound with the formula C5H10O that contains a ketone functional group?
A.
2-Pentanone
B.
3-Pentanone
C.
1-Pentanone
D.
Pentanal
Solution
The compound is a ketone with five carbon atoms. The longest carbon chain is pentane, and the ketone group is on the second carbon, making the IUPAC name 2-Pentanone.
Q. What is the IUPAC name of the compound with the formula C5H10O that contains a ketone functional group?
A.
2-Pentanone
B.
3-Pentanone
C.
1-Pentanone
D.
Pentanal
Solution
The compound is a ketone with five carbon atoms. The longest carbon chain is pentane, and the ketone group is on the second carbon, making it 2-Pentanone.
