Explore: All JEE Advanced chapters · JEE Advanced Chemistry PYQs · JEE Advanced hub · Syllabus & pattern · JEE Advanced 2026
Answer first
Some Basic Principles of Organic Chemistry PYQs (previous year questions) for JEE Advanced: Some Basic Principles of Organic Chemistry (Chemistry) had 10 questions across the 22 official JEE Advanced papers we tagged (2016–2026), and appeared in 8 of them. Asked in 8 of 11 years; last in 2025. The concepts asked in the most papers: Stereochemistry, Conformations, IUPAC Nomenclature.
Year-wise question count
Asked in 8 of 11 years, with 2 papers each year.
| Year | Questions |
|---|---|
| JEE Advanced 2026 | Not asked |
| JEE Advanced 2025 | 1 |
| JEE Advanced 2024 | Not asked |
| JEE Advanced 2023 | 1 |
| JEE Advanced 2022 | 1 |
| JEE Advanced 2021 | 1 |
| JEE Advanced 2020 | 3 |
| JEE Advanced 2019 | 1 |
| JEE Advanced 2018 | 1 |
| JEE Advanced 2017 | 1 |
| JEE Advanced 2016 | Not asked |
Most-asked concepts
Sorted by the number of papers a concept appeared in.
| Concept | Questions | Papers | Years |
|---|---|---|---|
| Conformations | 2 | 2 | 2021, 2020 |
| IUPAC Nomenclature | 2 | 2 | 2020, 2017 |
| Stereochemistry | 2 | 2 | 2023, 2022 |
| Acidity and Aromaticity | 1 | 1 | 2020 |
| Acidity of Hydrocarbons | 1 | 1 | 2025 |
| Isomerism | 1 | 1 | 2019 |
| Stereoisomerism | 1 | 1 | 2018 |
How to practise Some Basic Principles of Organic Chemistry PYQs
- Start with the concepts at the top of the table. They have come back the most.
- Solve one year’s Some Basic Principles of Organic Chemistry questions from the official PDF against the clock, then check the answer listed below.
- Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
- Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.
Questions by year
Each line gives the question number and paper, type, concept, our one-line summary and the official answer, with a link to the official PDF.
JEE Advanced2025
- Q.4 (Paper 1) · MCQ · Acidity of Hydrocarbons: Identify the most acidic marked hydrogen among hydrocarbons (official answer: B) PDF
JEE Advanced2023
- Q.2 (Paper 1) · MSQ · Stereochemistry: Asymmetric carbons in the major products of given reactions (official answer: C, D) PDF
JEE Advanced2022
- Q.8 (Paper 2) · Integer · Stereochemistry: Number of chiral fragments from ozonolysis of a polyene diol (official answer: 2) PDF
JEE Advanced2021
- Q.2 (Paper 1) · MCQ · Conformations: Most stable conformation of meso-butane-2,3-diol PDF
JEE Advanced2020
- Q.4 (Paper 1) · MCQ · Conformations: Identical molecules among given Newman projections PDF
- Q.5 (Paper 1) · MCQ · IUPAC Nomenclature: Structure matching a given IUPAC name of an unsaturated acid PDF
- Q.8 (Paper 1) · MSQ · Acidity and Aromaticity: Statements on acidity and aromaticity of compounds I-V PDF
JEE Advanced2019
- Q.14 (Paper 2) · Numerical · Isomerism: Number of cyclic ether isomers of C4H8O (official answer: 10) PDF
JEE Advanced2018
- Q.10 (Paper 2) · Numerical · Stereoisomerism: Count optically active stereoisomers of a compound PDF
JEE Advanced2017
- Q.24 (Paper 1) · MSQ · IUPAC Nomenclature: IUPAC name of a disubstituted benzene (official answer: A, B) PDF
Some Basic Principles of Organic Chemistry in other exams
The same chapter in other official papers we tagged: JEE Main (13 questions), NEET (1 question).
Other Chemistry chapters
- Some Basic Concepts in Chemistry PYQs
- Atomic Structure PYQs
- Chemical Bonding and Molecular Structure PYQs
- Chemical Thermodynamics PYQs
- Solutions PYQs
- Equilibrium PYQs
- Redox Reactions and Electrochemistry PYQs
- Chemical Kinetics PYQs
- Classification of Elements and Periodicity PYQs
- p-Block Elements PYQs
- d- and f-Block Elements PYQs
- Coordination Compounds PYQs
- Purification and Characterisation of Organic Compounds PYQs
- Hydrocarbons PYQs
- Organic Compounds Containing Halogens PYQs
- Organic Compounds Containing Oxygen PYQs
- Organic Compounds Containing Nitrogen PYQs
- Biomolecules PYQs
- Principles Related to Practical Chemistry PYQs
FAQ
How many Some Basic Principles of Organic Chemistry questions come in JEE Advanced?
In the official papers we tagged: 1 in 2025, 1 in 2023, 1 in 2022, 1 in 2021, 3 in 2020, 1 in 2019, 1 in 2018 and 1 in 2017 (2 papers each year). Not asked in the other 3 years. That is 10 questions in all, about 3% of Chemistry.
Which Some Basic Principles of Organic Chemistry topics repeat in JEE Advanced?
Asked in the most papers: Stereochemistry, Conformations, IUPAC Nomenclature. The concept table lists every one with its count.
Are these official JEE Advanced questions?
Yes. Every question is from an official JEE Advanced paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.