For the ISC 2026 Computer Science examination, Part I of the Theory Paper is a compulsory 20-mark section designed to test fundamental knowledge, application, and higher-order thinking skills across the entire syllabus.

Test Series Structure (20 Marks)

This section typically features a mix of standard Multiple Choice Questions (MCQs), assertion-reason questions, and objective-type fill-in-the-blanks.

• Format: 20 objective questions (1 mark each).
• Time Allocation: Approximately 5 minutes
• Focus: Testing "Remember, Understand, Apply, and Analyse" cognitive domains.

Most Expected MCQ Topics for 2026

Based on the latest specimen patterns and ISC 2026 Weightage, focus on these core areas:

• Boolean Algebra & Logic Gates:
  • Simplification using Boolean laws (e.g., De Morgan’s, Duality).
  • Identifying Minterms and Maxterms from truth tables.
  • Universal gates (NAND/NOR) and Half/Full Adder logic.
• Object-Oriented Programming (OOP) Concepts:
  • Static vs. Non-static members and their access rules.
  • Constructor properties (implicit return types, signatures).
  • Access specifiers (public, protected, private).
  • Inheritance and Polymorphism (keywords like super and this).
• Data Structures & Complexity:
  • Big O Notation: Identifying time complexity for common algorithms.
  • Stacks/Queues: Principle of operations (LIFO/FIFO).
  • Infix/Postfix: Conversion of expressions.
  • Binary Trees: Identifying traversal orders (In-order, Pre-order, Post-order).
• Java Fundamentals:
  • Wrapper classes and Type Casting (e.g., String to Double).
  • Array address calculations (Row Major vs. Column Major).
  • Exception Handling (identifying InputMismatchException or NullPointerException).

Sample Question Types

1. Assertion-Reason: "Assertion: Inheritance promotes reusability. Reason: A subclass acquires properties of a superclass."
2. Output-Based: Predicting the return value of a recursive method or a specific string manipulation function.
3. Critical Thinking: Choosing the correct statement to instantiate an object based on a provided class constructor.

Actionable Tip: Download the latest ISC Specimen Paper 2026 from the official CISCE website to practice the exact marking scheme and question style.

Would you like a practice set of 20 MCQs based specifically on these 2026 expected topics?