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CBSE Class 11 Computer Science: Chapter-wise Notes and PYQs

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CBSE · Class 11 · 2026-27

CBSE Class 11 Computer Science: chapter-wise study guide

All 11 chapters of CBSE Class 11 Computer Science for the 2026-27 session. Each chapter page explains the ideas, gives tricks to remember them, shows where students lose marks, and links to practice.

  • 11 chapters
  • 22 topic pages
Start with the first chapter

Exam note: Chapters follow the CBSE syllabus units, using NCERT titles where they match. Theory 70 marks and practicals 30 (lab test 12, report file and viva 10, project 8). All programming is in Python. Boolean logic is in the CBSE syllabus but not in the NCERT book; NCERT Emerging Trends and user-defined functions are not in the Class XI syllabus.

Computer Systems and Organisation

  1. Computer System

  2. Boolean Logic

  3. Encoding Schemes and Number System

Computational Thinking and Programming - 1

  1. Introduction to Problem Solving

  2. Getting Started with Python

  3. Flow of Control

  4. Strings

  5. Lists

  6. Tuples and Dictionaries

  7. Introduction to Python Modules

    NCERT teaches modules in section 7.5 of its Functions chapter; user-defined functions are Class XII content.

Society, Law and Ethics

  1. Societal Impact

Syllabus source: CBSE Computer Science syllabus, Class XI 2026-27, NCERT textbooks (Reprint 2026-27)