ISC Class 12 Computer Science Exam Pattern and Marking Scheme 2025: ISC Class 12 Computer Science Exam Pattern and Marking Scheme 2025 helps students prepare for the exam. The pattern covers different types of questions such as very short answer questions, short answer questions, long answer questions, and case studies based on real life. The pattern is based on 100 marks with each section contributing a different percentage. This information helps students to focus on important topics and organise their preparation.
ISC Class 12 Computer Science Topic-Wise Weightage Distribution 2025
The ISC board does not assign specific marks to individual chapters. However, by reviewing past sample papers, we provide students with an estimated weightage for each chapter.
| Section | Topic | Estimated Weightage (Marks) |
| SECTION A | Boolean Algebra | 8-10 |
| - Propositional logic, wff, truth tables, equivalence laws, simplifications | ||
| - Basic theorems, Karnaugh maps, applications | ||
| -Computer Hardware | 3-5 | |
| - Logic gates, adders, encoders, multiplexers | ||
| SECTION B | Programming in Java | 25-30 |
| - Objects, constructors, input/output | ||
| - Primitive types, wrapper classes, casting | ||
| - Variables, expressions, operators | ||
| - Statements, scope, and visibility | ||
| - Methods, static methods, recursion | ||
| - Arrays and strings | ||
| Implementation of Algorithms | Integrated into practicals | |
| SECTION C | Inheritance, Interface, Polymorphism | 8-10 |
| - Inheritance, dynamic binding, interfaces | ||
| Data Structures | 8-10 | |
| - Stacks, queues, linked lists, binary trees | ||
| Complexity and Big O Notation | 5-6 | |
| - Algorithm analysis, searching, sorting | ||
| Practical Exam | 30 | |
| - Lab assignments, viva | ||
| Total | 100 |
This table gives priority to Java programming, Boolean algebra, and data structures, which are core components of the syllabus. Practical programming skills are heavily emphasized in the evaluation process.
ISC Board Class 12 Computer Science Paper Format for 2025
| Section | Details |
| Total Marks | 70 (Theory) + 30 (Practical/Internal Assessment) |
| Duration | 3 hours |
| Theory Paper | Consists of two parts: |
| Part I | Compulsory questions covering the entire syllabus. |
| Part II | Choice-based questions (students answer a set number from a larger selection). |
| Key Topics Covered | Boolean Algebra, Java Programming, Data Structures, Algorithms, Complexity Analysis, Inheritance. |
ISC Board Class 12 Computer Science Exam Pattern 2025
| Section | Details |
| Total Marks | 70 (Theory) + 30 (Practical/Internal Assessment) |
| Duration | 3 hours |
| Part I | Compulsory questions covering various topics like Boolean Algebra, Java Programming, and Data Structures. |
| Part II | Section with choice-based questions, allowing students to choose a set number of questions from a larger selection. |
| Theory Distribution | Section A (40 marks), Section B (20 marks), Section C (10 marks). |
In this article, students can look at the overall exam pattern and the approximate weightage of each chapter as per the previous sample papers.
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