Important Questions for Class 12 CBSE Board Computer Science

Important Questions form all chapters of CBSE class 12 Computer Science

 

Important Questions for CBSE Class 12 Computer Science

CBSE Class 12 Computer Science is a vital subject for students aspiring to pursue careers in computer applications, engineering, or IT-related fields. With a strong focus on Python programming, database management, and networking concepts, students need to prepare strategically. Practicing important questions not only reinforces key concepts but also helps in understanding the exam pattern, time management, and scoring techniques.

Here are some of the most important questions that often appear in CBSE Class 12 Computer Science exams:

1. Python Programming and File Handling

  • Explain the difference between mutable and immutable data types in Python.

  • Write a Python program to read a text file and count the number of vowels.

  • How are binary files different from text files in Python?

  • What is the purpose of the with statement in file handling?

2. Data Structures (Stacks and Queues)

  • Write functions to implement push and pop operations in a stack using a list.

  • Demonstrate how a queue can be implemented using a list in Python.

  • Explain real-life applications of stacks and queues with examples.

3. Database Management with SQL

  • Differentiate between WHERE and HAVING Clauses in SQL with examples.

  • Write SQL queries to perform CRUD (Create, Read, Update, Delete) operations on a student database.

  • What are primary keys and foreign keys? Give examples.

4. Boolean Algebra

  • Prove the identity: A + A’B = A + B using a truth table.

  • Simplify the Boolean expression: A’BC + AB’C + ABC’.

  • Explain the use of logic gates in digital circuits.

5. Networking and Internet

  • What is the difference between LAN, MAN, and WAN?

  • Define IP address and MAC address. How are they different?

  • Explain the concept of DNS and its importance in networking.

Tips for Exam Preparation

  • Focus on understanding logic rather than rote memorization.

  • Practice coding questions by writing and executing programs.

  • Solve previous years' papers and sample papers regularly.

  • Revise important definitions, differences, and advantages of technologies.

By focusing on these important questions, students can boost their confidence and improve their performance in the CBSE Class 12 Computer Science exam. Consistent practice and clear conceptual understanding are the keys to scoring high.

S.no.Chapter-Wise Important Questions for Class 12 CBSE Board Computer Science
1.CBSE Questions for Chapter Classes and Objects
2.CBSE Questions for Chapter-Inheritance
3.CBSE Questions for Chapter-Data File Handling
4.CBSE Questions for Chapter-Linked Lists, Stacks and Queues
5.CBSE Questions for Chapter-C++ Revision Tour
6.CBSE Questions for Chapter-Implementation of OOP Concepts in C++
7.CBSE Questions for Chapter-Constructor and Destructor
8.CBSE Questions for Chapter-Networking and Open Source Concepts

Benefits of solving the important question for class 12 computer science

 

Advantages of Important Questions for CBSE Class 12 Computer Science

Preparing with important questions for CBSE Class 12 Computer Science offers several advantages that can significantly enhance a student’s exam readiness and performance. Here's how these questions contribute to effective preparation:

1. Focused Revision

Important questions help students focus on the key topics that are frequently asked in board exams. Instead of revising the entire textbook, students can concentrate on high-yield areas, ensuring they retain crucial information.

2. Better Understanding of Exam Pattern

By practicing important questions, students become familiar with the types of questions usually asked in the exam — whether short answer, long answer, or application-based programming questions. This helps in better planning during the exam.

3. Improved Time Management

Solving important questions under timed conditions improves a student’s ability to manage time during the actual exam. It gives them an idea of how long to spend on coding problems, SQL queries, or theoretical answers.

4. Confidence Boost

When students repeatedly practice questions that are likely to appear in the exam, they gain confidence in their preparation. This reduces exam stress and boosts performance on the final day.

5. Concept Clarity

Important questions often cover fundamental and tricky concepts. By solving them, students deepen their understanding of Python programming, data structures, Boolean algebra, and networking, leading to better conceptual clarity.

6. Identification of Weak Areas

Regular practice with important questions helps students identify which topics they are struggling with. This allows them to revise those sections more thoroughly before the exam.

7. Higher Scores

Ultimately, practicing important questions increases the chances of encountering similar questions in the board exam, giving students an edge in scoring higher marks.

Conclusion:
Incorporating important questions into your CBSE Class 12 Computer Science preparation is a smart strategy. It helps streamline revision, reinforces key concepts, and builds exam confidence — all of which are essential for scoring well in one of the most critical school-level exams. Read NCERT textbook and solve the questions with the help of NCERT solutions for class 12 Coumputer science. 

Solving grade 12 computer science questions has many different advantages. We've highlighted a few below.

1. Including the previous year's questions will help you to score better in your school exams as well as your competitive exams. 

2. The questions are based on the syllabus and cover all the essential IT concepts.

3. Students will be more engaged in topics if they practice the questions in the Important Questions. These basic questions will help students gain a solid understanding of the topics presented in the school.

4. Students' analytical and problem-solving skills will increase when answering such important questions.

Important Questions for CBSE Class 12 Computer Science exam structure 

Preparing for the CBSE Class 12 Computer Science board exam requires a strong grasp of programming concepts, data structures, SQL, networking, and theoretical foundations. Focusing on important questions helps you target high-weightage topics and familiarize yourself with the exam pattern. Below is a curated selection of important questions objective and subjective-across key units, along with tips for effective preparation.

  • Theory (70 marks):

    • Computational Thinking and Programming – 2 (Python): 40 marks

    • Computer Networks: 10 marks

    • Database Management: 20 marks

  • Practical (30 marks):

    • Python programming, SQL queries, project work, and viva voce