# BoardPrep

> Free CBSE Class 10 and 12 board exam preparation: previous year board question papers 2022–2026 with official marking schemes, 2026-27 sample papers, chapter-wise weightage calculated from real board papers, most repeated questions, a free mock paper generator and practice app.

BoardPrep (https://boardprep.dhiandkin.com) is an independent free study tool by Dhi & Kin. It is not affiliated with CBSE. Data: 192 CBSE board papers (two sets per subject per year, 2022–2026) and 7,694 questions. The 2026-27 CBSE paper pattern is unchanged from 2025-26 (CBSE notification of 21 September 2026).

## Key pages
- [Chapter-wise weightage for all subjects](https://boardprep.dhiandkin.com/cbse-chapter-wise-weightage/): average marks per board paper for each chapter, 2023–2026
- [CBSE Sample Papers 2026-27](https://boardprep.dhiandkin.com/cbse-sample-paper-2026-27/): Class 10 and 12 with marking schemes
- [Class 10 previous year papers](https://boardprep.dhiandkin.com/cbse-class-10-previous-year-question-papers/)
- [Class 12 previous year papers](https://boardprep.dhiandkin.com/cbse-class-12-previous-year-question-papers/)
- [About and methodology](https://boardprep.dhiandkin.com/about/): sources and how weightage is calculated

## Subjects
- [Class 10 Computer Applications](https://boardprep.dhiandkin.com/cbse-class-10-computer-applications-previous-year-question-papers/): 5 board papers; top chapters: HTML (29.5 marks/paper), Networking (13.5 marks/paper), Cyber Ethics (4.8 marks/paper)
- [Class 10 English](https://boardprep.dhiandkin.com/cbse-class-10-english-previous-year-question-papers/): 10 board papers; top chapters: Literature (18.6 marks/paper), Grammar (13.4 marks/paper), Writing Skills (4.9 marks/paper)
- [Class 10 Hindi A](https://boardprep.dhiandkin.com/cbse-class-10-hindi-a-previous-year-question-papers/): 7 board papers; top chapters: Writing Skills (10.0 marks/paper), Grammar (8.3 marks/paper)
- [Class 10 Hindi B](https://boardprep.dhiandkin.com/cbse-class-10-hindi-b-previous-year-question-papers/): 6 board papers; top chapters: Writing Skills (7.0 marks/paper), Grammar (4.5 marks/paper)
- [Class 10 Maths](https://boardprep.dhiandkin.com/cbse-class-10-mathematics-previous-year-question-papers/): 10 board papers; top chapters: Trigonometry (16.5 marks/paper), Circles (8.1 marks/paper), Statistics (7.5 marks/paper)
- [Class 10 Maths Basic](https://boardprep.dhiandkin.com/cbse-class-10-mathematics-basic-previous-year-question-papers/): 8 board papers; top chapters: Trigonometry (14.7 marks/paper), Circles (8.7 marks/paper), Statistics (8.0 marks/paper)
- [Class 10 Science](https://boardprep.dhiandkin.com/cbse-class-10-science-previous-year-question-papers/): 10 board papers; top chapters: Light – Reflection & Refraction (11.2 marks/paper), Electricity (9.0 marks/paper), Carbon & its Compounds (7.2 marks/paper)
- [Class 10 Social Science (SST)](https://boardprep.dhiandkin.com/cbse-class-10-social-science-previous-year-question-papers/): 10 board papers; top chapters: Geography: Lifelines of Economy (7.2 marks/paper), History: Nationalism in India (6.9 marks/paper), Political Science: Outcomes of Democracy (6.5 marks/paper)
- [Class 12 Accountancy](https://boardprep.dhiandkin.com/cbse-class-12-accountancy-previous-year-question-papers/): 10 board papers; top chapters: Share Capital (16.5 marks/paper), Debentures (7.5 marks/paper), Dissolution of Firm (7.4 marks/paper)
- [Class 12 Biology](https://boardprep.dhiandkin.com/cbse-class-12-biology-previous-year-question-papers/): 10 board papers; top chapters: Molecular Basis of Inheritance (11.2 marks/paper), Reproductive Health (10.6 marks/paper), Human Health & Disease (8.2 marks/paper)
- [Class 12 Business Studies (BST)](https://boardprep.dhiandkin.com/cbse-class-12-business-studies-previous-year-question-papers/): 10 board papers; top chapters: Marketing (19.9 marks/paper), Planning (13.8 marks/paper), Staffing (7.0 marks/paper)
- [Class 12 Chemistry](https://boardprep.dhiandkin.com/cbse-class-12-chemistry-previous-year-question-papers/): 10 board papers; top chapters: Coordination Compounds (9.1 marks/paper), Aldehydes, Ketones & Carboxylic Acids (8.0 marks/paper), Electrochemistry (7.1 marks/paper)
- [Class 12 Computer Science (CS)](https://boardprep.dhiandkin.com/cbse-class-12-computer-science-previous-year-question-papers/): 5 board papers; top chapters: Python Revision & Functions (24.5 marks/paper), Database & SQL (21.5 marks/paper), Computer Networks (8.8 marks/paper)
- [Class 12 Economics](https://boardprep.dhiandkin.com/cbse-class-12-economics-previous-year-question-papers/): 10 board papers; top chapters: Indian Economy: Human Capital & Rural Development (11.5 marks/paper), Macro: Money & Banking (11.1 marks/paper), Macro: National Income (7.8 marks/paper)
- [Class 12 English Core](https://boardprep.dhiandkin.com/cbse-class-12-english-core-previous-year-question-papers/): 9 board papers; top chapters: Literature (19.0 marks/paper), Writing Skills (10.5 marks/paper), Grammar (2.0 marks/paper)
- [Class 12 Geography](https://boardprep.dhiandkin.com/cbse-class-12-geography-previous-year-question-papers/): 10 board papers; top chapters: Transport & Communication (15.4 marks/paper), International Trade (14.1 marks/paper), Population (11.5 marks/paper)
- [Class 12 Hindi Core](https://boardprep.dhiandkin.com/cbse-class-12-hindi-core-previous-year-question-papers/): 6 board papers; top chapters: Writing Skills (18.8 marks/paper), Literature (1.5 marks/paper), Grammar (1.0 marks/paper)
- [Class 12 Hindi Elective](https://boardprep.dhiandkin.com/cbse-class-12-hindi-elective-previous-year-question-papers/): 6 board papers; top chapters: Grammar (7.3 marks/paper), Writing Skills (4.3 marks/paper), Literature (4.0 marks/paper)
- [Class 12 History](https://boardprep.dhiandkin.com/cbse-class-12-history-previous-year-question-papers/): 10 board papers; top chapters: Bricks, Beads & Bones (Harappa) (6.9 marks/paper), Kings, Farmers & Towns (6.9 marks/paper), An Imperial Capital: Vijayanagara (6.8 marks/paper)
- [Class 12 Informatics Practices (IP)](https://boardprep.dhiandkin.com/cbse-class-12-informatics-practices-previous-year-question-papers/): 5 board papers; top chapters: Database Query using SQL (23.8 marks/paper), Pandas: Series & DataFrame (20.5 marks/paper), Computer Networks (11.2 marks/paper)
- [Class 12 Maths](https://boardprep.dhiandkin.com/cbse-class-12-mathematics-previous-year-question-papers/): 10 board papers; top chapters: Integrals (16.6 marks/paper), Relations & Functions (7.5 marks/paper), Probability (6.8 marks/paper)
- [Class 12 Physics](https://boardprep.dhiandkin.com/cbse-class-12-physics-previous-year-question-papers/): 10 board papers; top chapters: Moving Charges & Magnetism (7.9 marks/paper), Electric Charges & Fields (7.5 marks/paper), Semiconductor Electronics (7.5 marks/paper)
- [Class 12 Psychology](https://boardprep.dhiandkin.com/cbse-class-12-psychology-previous-year-question-papers/): 5 board papers; top chapters: Psychological Disorders (14.2 marks/paper), Self & Personality (13.0 marks/paper), Meeting Life Challenges (12.0 marks/paper)

## Board papers by year
- [2026 board papers](https://boardprep.dhiandkin.com/cbse-board-question-papers-2026/)
- [2025 board papers](https://boardprep.dhiandkin.com/cbse-board-question-papers-2025/)
- [2024 board papers](https://boardprep.dhiandkin.com/cbse-board-question-papers-2024/)
- [2023 board papers](https://boardprep.dhiandkin.com/cbse-board-question-papers-2023/)
- [2022 board papers](https://boardprep.dhiandkin.com/cbse-board-question-papers-2022/)

## Free app
- [https://boardprep.dhiandkin.com/app/](https://boardprep.dhiandkin.com/app/): question-wise practice with answers, board-pattern paper generator with PDF and answer key, Pattern Challenge leaderboard, study tracker