# CBSE Class 12 PYQ Chapter Wise (2016–2026)
> CBSE Class 12 PYQ chapter wise: all 1287 questions from 50 official CBSE Class 12 papers (2016–2026), sorted by chapter, with year-by-year counts.
Source: https://previousyearquestions.app/cbse-class-12/chapters/
Explore: CBSE Class 12 hub · Syllabus & pattern · Class 12 2026
## Answer first
We tagged all **1287 questions** in 50 official CBSE Class 12 papers (2016–2026) by chapter. In Physics, Ray Optics and Optical Instruments leads with 31 questions. In Chemistry, Chemical Kinetics leads with 28 questions. In Mathematics, Integrals leads with 39 questions. In Biology, Principles of Inheritance and Variation leads with 27 questions. In English Core, Writing Skills leads with 38 questions. Use the tables to see how often each chapter appears each year, then open a chapter for every question it has had.
## Physics
All Physics chapters on one page: [CBSE Class 12 Physics PYQs](/cbse-class-12/chapters/physics/). Physics chapters by questions in each year. The last column is the total across all 50 papers.
Most-asked Physics chapters: [Ray Optics and Optical Instruments](/cbse-class-12/chapters/ray-optics-and-optical-instruments/) (31), [Semiconductor Electronics](/cbse-class-12/chapters/semiconductor-electronics/) (30), [Current Electricity](/cbse-class-12/chapters/current-electricity/) (28), [Moving Charges and Magnetism](/cbse-class-12/chapters/moving-charges-and-magnetism/) (27), [Dual Nature of Radiation and Matter](/cbse-class-12/chapters/dual-nature-of-radiation-and-matter/) (24).
## Chemistry
All Chemistry chapters on one page: [CBSE Class 12 Chemistry PYQs](/cbse-class-12/chapters/chemistry/). Chemistry chapters by questions in each year. The last column is the total across all 50 papers.
Most-asked Chemistry chapters: [Chemical Kinetics](/cbse-class-12/chapters/chem-kinetics/) (28), [Solutions](/cbse-class-12/chapters/chem-solutions/) (25), [Haloalkanes and Haloarenes](/cbse-class-12/chapters/chem-haloalkanes/) (25), [Amines](/cbse-class-12/chapters/chem-amines/) (24), [The d- and f-Block Elements](/cbse-class-12/chapters/chem-d-f-block/) (23).
## Mathematics
All Mathematics chapters on one page: [CBSE Class 12 Mathematics PYQs](/cbse-class-12/chapters/mathematics/). Mathematics chapters by questions in each year. The last column is the total across all 50 papers.
Most-asked Mathematics chapters: [Integrals](/cbse-class-12/chapters/m12-integrals/) (39), [Vector Algebra](/cbse-class-12/chapters/m12-vectors/) (33), [Three Dimensional Geometry](/cbse-class-12/chapters/m12-3d/) (30), [Probability](/cbse-class-12/chapters/m12-probability/) (30), [Application of Derivatives](/cbse-class-12/chapters/m12-applications-derivatives/) (29).
## Biology
All Biology chapters on one page: [CBSE Class 12 Biology PYQs](/cbse-class-12/chapters/biology/). Biology chapters by questions in each year. The last column is the total across all 50 papers.
Most-asked Biology chapters: [Principles of Inheritance and Variation](/cbse-class-12/chapters/bio-inheritance/) (27), [Human Health and Disease](/cbse-class-12/chapters/bio-human-health/) (27), [Biotechnology: Principles and Processes](/cbse-class-12/chapters/bio-biotech-principles/) (27), [Sexual Reproduction in Flowering Plants](/cbse-class-12/chapters/bio-plant-reproduction/) (26), [Molecular Basis of Inheritance](/cbse-class-12/chapters/bio-molecular-inheritance/) (23).
## English Core
All English Core chapters on one page: [CBSE Class 12 English Core PYQs](/cbse-class-12/chapters/english-core/). English Core chapters by questions in each year. The last column is the total across all 50 papers.
Most-asked English Core chapters: [Writing Skills](/cbse-class-12/chapters/eng12-writing/) (38), [Literature: Flamingo](/cbse-class-12/chapters/eng12-flamingo/) (30), [Reading Comprehension](/cbse-class-12/chapters/eng12-reading/) (23), [Literature: Vistas](/cbse-class-12/chapters/eng12-vistas/) (20), [Grammar and Other Items](/cbse-class-12/chapters/eng12-other/) (8).
## How we tagged the papers
- **Source:** only official CBSE Class 12 papers published by the conducting body and hosted on our year pages. 2026: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2025: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2024: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2023: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2022: Biology Term 2 (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics Term 2 (65/1/1); Physics Term 2 (55/1/1) · 2020: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2019: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2018: Biology (57/1); Chemistry (56/1); English Core (1/1); Mathematics (65/1); Physics (55/1) · 2017: Biology (57/1); Chemistry (56/1); English Core (1/1/1); Mathematics (65/1); Physics (55/1) · 2016: Biology (57/1); Chemistry (56/1/N); English Core (1/1); Mathematics (65/1/N); Physics (55/1/N).
- **Chapters:** one NCERT chapter per question for Physics, Chemistry, Mathematics, Biology and English Core, including chapters that later syllabi removed. Internal choices are tagged by their first option.
- **Answers:** shown only where an official key is hosted.
- **Summaries** are ours, so you can scan a chapter quickly. Open the official PDF for the full question.
**Not included:**
- **2021:** CBSE cancelled the 2021 board examinations because of COVID-19 and assessed students on school marks, so there is no 2021 paper.
## FAQ
### Which CBSE Class 12 chapters have the most questions?
Physics: Ray Optics and Optical Instruments (31), Semiconductor Electronics (30), Current Electricity (28). Chemistry: Chemical Kinetics (28), Solutions (25), Haloalkanes and Haloarenes (25). Mathematics: Integrals (39), Vector Algebra (33), Three Dimensional Geometry (30). Biology: Principles of Inheritance and Variation (27), Human Health and Disease (27), Biotechnology: Principles and Processes (27). English Core: Writing Skills (38), Literature: Flamingo (30), Reading Comprehension (23). Counts are totals across the 50 official CBSE Class 12 papers tagged here.
### Which CBSE Class 12 papers are included?
Only official papers that the conducting body published and that we host: 2026: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2025: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2024: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2023: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2022: Biology Term 2 (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics Term 2 (65/1/1); Physics Term 2 (55/1/1) · 2020: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2019: Biology (57/1/1); Chemistry (56/1/1); English Core (1/1/1); Mathematics (65/1/1); Physics (55/1/1) · 2018: Biology (57/1); Chemistry (56/1); English Core (1/1); Mathematics (65/1); Physics (55/1) · 2017: Biology (57/1); Chemistry (56/1); English Core (1/1/1); Mathematics (65/1); Physics (55/1) · 2016: Biology (57/1); Chemistry (56/1/N); English Core (1/1); Mathematics (65/1/N); Physics (55/1/N). Years without an official paper, or whose text could not be read reliably, are left out and listed in the method section.
### Are the answers official?
CBSE marking schemes give model answers and step marks rather than single options, so we link the marking scheme on each year page instead of showing an answer here.