CBSE Class 12 Board Exam Computer Science PYQs 2026 – Chapter-Wise Previous Year Questions, Pattern & Smart Preparation Guide
- Divya Shinde
- 10 hours ago
- 4 min read
Introduction
Preparing for the CBSE Class 12 Board Exam Computer Science 2026 requires more than just completing the syllabus. One of the most powerful and proven strategies to score high marks is practicing Previous Year Questions (PYQs). PYQs help students understand the actual exam pattern, frequently asked topics, difficulty level, and marking scheme followed by CBSE.
In this detailed guide, we will cover everything you need to know about CBSE Class 12 Computer Science PYQs 2026, including chapter-wise important questions, exam pattern analysis, benefits of solving PYQs, preparation strategy, and official resources. This blog is written according to the latest CBSE relevance for 2026 and is designed to be easily understood by students.
If you want to boost your confidence, improve accuracy, and score 90+ in Computer Science, this guide is for you.
Why CBSE Class 12 Computer Science PYQs 2026 Are Important
Practicing CBSE Class 12 Computer Science PYQs 2026 is not optional—it is essential. Every year, CBSE repeats concepts, question formats, and even similar coding problems.
Key benefits of PYQs:
Understand real board-level questions
Identify high-weightage chapters
Improve time management
Learn CBSE’s answer-writing style
Reduce exam fear
In one sentence: Regular practice of CBSE Class 12 Computer Science PYQs 2026 helps students master both theory and programming questions efficiently.
CBSE Class 12 Computer Science Exam Overview 2026
Before diving into PYQs, it is important to understand the exam structure.
Subject: Computer Science (083)Class: 12Board: CBSEExam Year: 2026Theory Marks: 70Practical Marks: 30Exam Duration: 3 Hours
The theory paper includes:
Very Short Answer Questions
Short Answer Questions
Case-Based Questions
Long Answer Questions
Programming Questions (Python + SQL)
CBSE Class 12 Computer Science PYQs 2026 – Chapter-Wise Analysis
Studying PYQs chapter-wise helps you focus on important areas instead of studying randomly.
1. Python Revision Tour – PYQs
This chapter forms the foundation of programming questions.
Frequently Asked PYQs:
Difference between list and tuple
Output-based questions on loops
Functions with parameters and return values
File handling using text files
Scope of variables
Trend Observation: At least 10–15 marks questions are asked every year from Python basics and logic building.
2. Data Structures (Lists, Stack, Queue) – PYQs
This is one of the most important chapters.
Common PYQs:
Stack implementation using list
Menu-driven programs
Queue operations
Output of list slicing
Advantages of stack and queue
Tip: Most coding questions in boards are directly inspired by previous year questions.
3. Database Management System (MySQL) – PYQs
DBMS carries heavy weightage and is scoring if practiced well.
Important PYQs:
SQL queries using SELECT, WHERE, ORDER BY
Aggregate functions (COUNT, SUM, AVG)
Group By and Having clause
Primary key vs Foreign key
Output of SQL queries
Expected Weightage: 15–18 marks
4. Boolean Algebra – PYQs
This chapter is theory-based but very predictable.
Repeated PYQs:
Truth table construction
Canonical form
Logic gate diagrams
Simplification using Boolean laws
Board Insight: CBSE often repeats similar Boolean expressions with small changes.
5. Computer Networks – PYQs
Short and easy chapter, perfect for scoring.
Frequently Asked:
Types of networks (LAN, MAN, WAN)
Network devices (Hub, Switch, Router)
Protocols (HTTP, FTP, TCP/IP)
IP address and URL
6. Data Communication and Security – PYQs
Usually asked in short answer format.
Common PYQs:
Modes of data transmission
Encryption and decryption
Cyber threats
Firewalls and antivirus
Pattern Analysis Based on CBSE Class 12 Computer Science PYQs 2026
After analyzing multiple years of PYQs, the following pattern is clear:
Programming questions are concept-based, not tricky
SQL queries are direct but test accuracy
Theory questions are often repeated
Case-based questions are formed from PYQs
This makes CBSE Class 12 Computer Science PYQs 2026 extremely reliable for preparation.
How to Use PYQs for Maximum Score (Smart Strategy)
Start solving PYQs chapter-wise
Write answers in CBSE format
Practice coding questions on paper
Time yourself while solving full papers
Analyze mistakes and revise weak areas
Avoid memorizing answers. Focus on understanding logic.
Common Mistakes Students Make While Solving PYQs
Ignoring theory questions
Not practicing SQL syntax properly
Writing incomplete Python programs
Skipping diagrams in theory answers
Not revising PYQs before exam
Avoid these to improve your score significantly.
Best Resources for CBSE Class 12 Computer Science PYQs 2026
CBSE official question papers
Sample papers by CBSE
NCERT textbook examples
CBSE marking schemes
FAQ – CBSE Class 12 Computer Science PYQs 2026
Q1. Are CBSE Class 12 Computer Science PYQs 2026 enough for board preparation?
Answer: Yes, practicing CBSE Class 12 Computer Science PYQs 2026 along with NCERT is enough to score very well, as most questions are conceptually repeated.
Q2. How many years of PYQs should I practice?
Answer: Practicing the last 10 years of PYQs is ideal for understanding trends and repeated questions.
Q3. Are Python programs repeated in CBSE boards?
Answer: Yes, similar logic-based Python programs are frequently repeated with minor changes.
Q4. Is SQL important for scoring high marks?
Answer: Absolutely. SQL questions are direct and can help you secure full marks if practiced well.
Conclusion
Preparing for the CBSE Class 12 Board Exam Computer Science 2026 becomes much easier when you focus on Previous Year Questions. PYQs reveal the mindset of the examiner, highlight important topics, and help you practice exactly what matters.
By consistently solving CBSE Class 12 Computer Science PYQs 2026, revising concepts, and practicing programming questions, you can confidently aim for a high score in the board exam.
Make PYQs your strongest weapon, stay consistent, and success will follow.
Official Links
For authentic and updated material, always refer to official CBSE sources:
CBSE Official Website: https://www.cbse.gov.in
CBSE Academic Portal: https://cbseacademic.nic.in
NCERT Textbooks: https://ncert.nic.in
Download official question papers, sample papers, and marking schemes from these portals only.
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