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The CBSE Class 12 Computer Science Question Paper 2025 is one of the most important resources for students preparing for their board examinations. Computer Science has become a highly valued subject due to its role in higher studies, engineering, data science, and IT-related careers.
Students often find the subject a mix of programming, problem-solving, and theoretical concepts, making it crucial to have the right strategy. This article provides a comprehensive analysis of the 2025 question paper, the importance of previous year question papers (PYQs), important topics, unique preparation tips, and recommended books to score high marks.
Importance of PYQs in CBSE Class 12 Computer Science Preparation
Studying previous year question papers (PYQs) is one of the most effective ways to prepare for the Class 12 Computer Science exam. Here’s why they are valuable:
- Identify Repeated Topics – Many concepts such as file handling, SQL queries, and recursion are frequently asked in different forms.
- Understand Paper Pattern – PYQs give insights into the exact weightage of topics and the level of difficulty.
- Improve Time Management – Solving past papers under exam conditions helps in pacing answers within the 3-hour limit.
- Boost Confidence – Familiarity with the structure reduces exam-day anxiety.
- Enhance Problem-Solving Skills – Coding-based questions in PYQs train students to handle unseen problem statements effectively.
CBSE Class 12 Computer Science Question Paper PDF - Last 10 Years
The CBSE Class 12 Computer Science Question Paper PDF – Last 10 Years is an essential resource for students aiming to score high in board exams. By practicing these past papers from 2015 to 2025, students can understand exam trends, frequently asked coding and SQL questions, and the overall paper pattern. Regular revision of these PDFs helps improve time management, accuracy, and confidence, making them one of the most effective preparation tools.
Download PDF | Computer Science Question Paper |
Computer Science Question Paper 2025 | |
Computer Science Question Paper 2024 | |
Computer Science Question Paper 2023 | |
Computer Science Question Paper 2022 | |
Download PDF | Computer Science Question Paper 2021 |
Download PDF | Computer Science Question Paper 2020 |
Trends Analysis of CBSE Class 12 Computer Science Question Paper (Last 3 Years)
Year | Key Trends & Highlights |
2023 | Paper had more application-based coding questions. Python recursion, file handling, and output prediction questions were tricky. SQL queries included joins and conditions. Networking & Boolean algebra were moderate. |
2024 | Balanced and student-friendly paper. Equal weightage to Python programming, database queries, and networking concepts. Coding output questions tested logic and accuracy. Boolean algebra questions were direct and scoring. |
2025 | Latest paper continued the trend with Python (functions, stacks, file handling) and SQL queries as dominant sections. Networking and cyber safety gained importance. Difficulty level: moderate with tricky coding problems. |

Unique Preparation Tips for CBSE Class 12 Computer Science
1-Reverse Learning Technique
- Instead of starting with textbooks, begin by solving previous year question papers (PYQs) and sample papers.
- Mark the chapters where you made mistakes or felt confused, then go back and study only those parts.
- This helps you save time and target your weak areas directly instead of wasting time on already strong topics.
2-Dry Run Coding Practice
- In the exam, you cannot use a computer, so practice writing code on paper.
- Predict outputs, trace logic step by step, and check if your answer matches the expected result.
- This improves accuracy and reduces silly mistakes in syntax or logic.
3-SQL Query Game
- Make learning SQL fun by turning it into a quick quiz.
- Randomly generate queries from a dataset, for example: “Find all students who scored above 90 in Physics”.
- Challenge yourself to solve each query in under 2 minutes.
- This will sharpen your query-writing speed and confidence.
4-Mind Maps for Networks
- Networking has many concepts like IP addresses, devices, protocols, and topologies.
- Prepare mind maps and flowcharts to link these together.
- Visual diagrams make revision faster and easier than reading long notes.
5-Error Collection Notebook
- While practicing coding, keep a small notebook where you record every mistake (wrong logic, syntax error, missing step).
- Revise this notebook before the exam—it acts like a personal error guide.
- This prevents you from repeating the same mistakes in the board exam.
6-Simulated Exam Conditions
- Take at least 2–3 full-length mock tests in a strict 3-hour exam setting.
- Avoid distractions, use only pen and paper, and time yourself exactly like the board exam.
- This builds confidence, improves speed, and helps you handle exam pressure effectively.
Recommended Question Banks and PYQs Books for CBSE Class 12 Computer Science 2026
- Educart Computer Science Question Bank – Best for chapter-wise practice, case-based questions, and understanding CBSE marking schemes.
- Arihant Chapterwise & Topicwise Solved Papers – Covers 10–15 years of PYQs arranged by topic, with detailed solutions for coding, SQL, and Boolean Algebra.
- Oswaal CBSE Question Bank – Provides toppers’ handwritten answers, board trend analysis, and mind maps for easy revision.
- CBSE Official Sample Papers – Essential for practicing the exact board exam pattern and real difficulty level.
- NCERT Textbook + Exemplar – Strong foundation for theory, coding basics, and logical problem-solving.
Conclusion for CBSE Class 12 Computer Science Question Paper 2025
The CBSE Class 12 Computer Science Question Paper 2025 reflects a balanced mix of programming skills, database knowledge, networking concepts, and logical reasoning. Over the years, the trend has shifted from purely theoretical questions to more application-based coding and SQL queries, ensuring students develop practical problem-solving abilities.
Python programming, file handling, recursion, and SQL queries continue to dominate the paper, while Boolean Algebra and networking remain scoring areas. Students who regularly practice previous year question papers, official sample papers, and standard question banks gain a clear advantage in understanding exam patterns and managing time effectively. With the right blend of conceptual clarity, consistent practice, and smart revision strategies, even challenging coding problems can be handled with ease. Ultimately, Computer Science is one of the most scoring subjects in the CBSE curriculum, provided students focus on logic building and exam-oriented preparation.