Computer Science Sample Paper Class 12 2025 PDF

Computer science, in today’s age, is the backbone of the world. From the smartphones we use every day to the complex algorithms, computer science is at the heart of the digitised world. For Class 12 students, mastering this subject is important, not just for clearing exams; it is also an essential skill required for your future careers.

One of the most effective ways to prepare for the Class 12 Computer Science exam is by practising with sample papers. These papers are designed to give you a view of the actual exam, helping you understand the types of questions you'll face and how to answer them correctly. 

CBSE Class 12 Computer Science Sample Papers With Solutions

The CBSE has released the Class 12 Computer Science Sample Papers for the Board Exams of the academic year 2024-25 on its official website.

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Students can download these sample papers directly from this page, available in a year-wise PDF format along with detailed solutions to aid in their preparation. If you are looking for worthy learning and revision resources for the Class 12 Computer Science syllabus, then you are in the right place. Here, we have provided all the CBSE Class 12 Computer Science Sample Papers released so far.

Changes in the CBSE Computer Science Sample Paper 

• There were 35 questions in the paper before, which has been increased to 37 now. 
• The 18 questions of MCQs are now increased to 21 questions in the MCQs.
• Section A had 18 marks before, but now it contains 21 marks.
• Section B (Very Short Questions) has seen no changes; it is the same.
• Section C (Short Questions)included 5 questions, which have been reduced to 3 questions.
• Section C was carrying 15 marks before, which has been reduced to 9.
• Section D (Long Questions I) has changed its questions from 2 to 4, and the total number of marks, Section D includes now is 16. 
• Section E (Long Questions II), which consists of 3 questions, now includes 2 questions, and the total marks of Section E are now 10. 

Why is Sample Paper Class 12 Computer Science Important?

Well, you know the importance of the subject of computer science. Now, let’s talk about why sample papers are important for your exam preparation. Think of sample papers as practice for the exam day. They help you get familiar with the format of the exam, the types of questions you'll be asked, and the timing you’ll need to finish the paper.

• Sample papers mimic the structure of the actual exam, giving you a clear idea of what to expect. This includes the number of questions, the mark distribution, and the variety of questions. 
• The more you practice with sample papers, the more you'll notice the reoccurrence of some topics in the types of questions asked. This helps you find what areas to focus on and prepares you to handle different kinds of questions with confidence.
• One of the biggest challenges in any exam is managing time effectively. Practice with sample papers allows you to develop a strategy for dividing your time between different sections, ensuring you don’t spend too much time on one question.

What types of questions are asked in the Computer Science Class 12 Exam?

Familiarising yourself with the exam format reduces the time of checking and understanding the type of questions in the exam, and you will be more confident while solving questions. The paper is divided into 4 sections: A, B, C, D, and E. Here are some questions you will expect in the question paper:

Section A (18 marks)

Section A consists of 18 questions. Each question carries 1 mark. These are mostly multiple-choice questions and require you to choose one correct option.

Example: In the MYSQL database, if a table, Alpha, has degree 5 and cardinality 3, and another table, Beta, has degree 3 and cardinality 5, what will be the degree and cardinality of the Cartesian product of Alpha and Beta? 

1. 5,3
2. 8,15 
3. 3,5 
4. 15,8 

Section B (14 marks)

This consists of 7 questions. Each question carries 2 marks. This section requires you to answer briefly and present your knowledge in short words.

Example: Ms. Shalini has just created a table named “Employee” containing columns Ename, Department, and Salary. After creating the table, she realised that she had forgotten to add a primary key column to the table. Help her in writing an SQL command to add a primary key column EmpId of integer type to the table Employee. Thereafter, write the command to insert the following record in the table:

1. EmpId- 999
2. Ename- Shweta 
3. Department: Production 
4. Salary: 26900

Section C (15 marks)

Section C consists of 5 questions (26 to 30). Each question carries 3 marks. This is also known as short answer type questions, which require answers that are not very detailed but concise.

Example: Write a function in Python to read a text file, Alpha.txt, and display those lines that begin with the word ‘You’. 

Section D (8 marks)

Section D consists of 2 questions (31 to 32). Each question carries 4 marks.

Example: Vedansh is a Python programmer working in a school. For the Annual Sports Event, he has created a csv file named Result.csv to store the results of students in different sports events. 

• The structure of Result.csv is: [St_Id, St_Name, Game_Name, Result]. 
• Where St_Id is the student ID (integer). 
• ST_name is Student Name (string).
• Game_Name is the name of the game in which the student is participating (string). 
• The result is the result of the game, whose value can be either 'Won', 'Lost', or 'Tie'. 

For efficiently maintaining the data of the event, Vedansh wants to write the following user-defined functions: Accept(): to accept a record from the user and add it to the file Result.csv. The column headings should also be added on top of the CSV file. wonCount()—to count the number of students who have won any event. As a Python expert, help him complete the task.

Section E (15 marks)

Section E consists of 3 questions (33 to 35). Each question carries 5 marks. Section E is mostly a combination of two or three subquestions. 

Example:

1. Differentiate between r+ and w+ file modes in Python. 
2. Consider a file, SPORT.DAT, containing records of the following structure:

• [SportName, TeamName, No_Players] Write a function, copy data (), that reads contents from the file SPORT.DAT and copies the records with Sport name as “Basket Ball” to the file named BASKET.DAT. The function should return the total number of records copied to the file BASKET.DAT.

Tips to Achieve Your Goals of Acing the Class 12 Computer Science Exam 

With a clear understanding of the exam pattern and the importance of sample papers, let us look at some strategies that can help you excel in your Class 12 Computer Science exam.

• Make sure you have a solid understanding of all the key concepts covered in the syllabus. Regular revision is essential, especially for topics that you find challenging.
• Computer science is not just about theory; it's also about application. Make sure you're comfortable with practical tasks like coding, debugging, and working with databases. Practical knowledge will not only help you in the exam but also real-life situations.
• Prioritise your revision based on the weight of the topics. Spend more time on areas that carry more marks, but don’t neglect the smaller sections, as every mark counts.
• In addition to sample papers, practice with previous years’ question papers. This will give you a broader perspective on the types of questions that have been asked in the past and how the exam pattern has evolved.

Preparing for the Class 12 Computer Science exam requires a combination of thorough understanding, consistent practice, and planning. Sample papers are a treasure box in this process, helping you to familiarise yourself with the exam format, manage your time effectively, and reduce exam anxiety. 

FAQs

1. How to download the CBSE Sample Paper Class 12 Computer Science for 2025 Exams?

Students can directly download the Computer Science sample paper for CBSE class 12 for the academic session 2024-25 from its official website- cbseacademic.nic.in. Every student should go through the Computer Science sample paper to understand the change in paper pattern, and study accordingly. 

2. What are the benefits of Solving CBSE Sample Paper Class 12 Computer Science?

Solving sample paper has a lot of benefits. It helps students to improve their speed and accuracy while solving the Computer Science class 12 CBSE sample paper. Especially for Computer Science, students need to get an idea about the latest paper pattern as CBSE often changes the syllabus  every year.