NSO Preparation 2025-26: The National Science Olympiad (NSO) conducted by the Science Olympiad Foundation (SOF) is one of the most prestigious exams for school students from Class 1 to 12. It not only helps strengthen conceptual understanding in science but also builds analytical and reasoning skills from an early age. As NSO 2025-26 approaches, it’s crucial for students to adopt the right preparation strategies to score well. In this guide, we’ll cover tips, preparation strategy, important dates, and study resources to help students prepare effectively for NSO 2025-26.
Overview of SOF NSO 2025-26
| Exam Name | SOF National Science Olympiad (NSO) |
| Organized By | Science Olympiad Foundation (SOF) |
| Exam Dates | 13th Nov, 27th Nov & 11th Dec 2025 |
| Eligibility | Students from Class 1 to 12 |
| Subjects Covered | Science (Physics, Chemistry, Biology) & Logical Reasoning |
| Mode of Exam | Offline (through schools) |
| Question Type | Objective (MCQs) |
Why Prepare for NSO?
- Enhances understanding of science concepts beyond school curriculum
- Boosts logical and analytical thinking
- Builds competitive spirit among students
- Provides early exposure to national-level exams
- Opportunity to win awards, scholarships & recognition
NSO Preparation Strategy by Class
Every student must tailor their preparation strategy based on their grade level. Here’s a quick strategy breakdown:
| Class Group | Focus Area | Key Tips |
| Class 1-4 | Basics of science, observation, logical reasoning | Use fun visuals, diagrams, activity-based learning |
| Class 5-8 | Conceptual clarity, syllabus completion, Olympiad books | Practice topic-wise MCQs, take mock tests regularly |
| Class 9-10 | Physics, Chemistry, Biology & Reasoning | Deepen conceptual understanding, solve previous papers |
| Class 11-12 | Advanced topics, logical reasoning, HOTS questions | Focus on NCERT + Olympiad-specific materials |
NSO Syllabus Overview (Class-wise)
Though the NSO syllabus is based on CBSE/ICSE and state boards, it includes additional reasoning and HOTS (Higher Order Thinking Skills) questions. Here’s a sample outline:
| Class | Topics Covered |
| 1–4 | Plants, Animals, Human Body, Weather, Earth, Logical Reasoning |
| 5–8 | Nutrition, Respiration, Electricity, Light, Environment, Logical Reasoning |
| 9–10 | Motion, Force, Work and Energy, Acids & Bases, Cell Biology, Reasoning |
| 11–12 | Organic Chemistry, Physics (Mechanics, Thermodynamics), Biology, Advanced Reasoning |
Note: The Logical Reasoning section is common across all classes and carries 5–10 questions.
Top Preparation Tips for NSO 2025-26
1. Understand the NSO Exam Pattern
Before diving into studies, know the format:
| Section | No. of Questions | Marks per Question |
| Logical Reasoning | 5–10 | 1 |
| Science | 25–35 | 1 |
| Achievers Section (HOTS) | 5 | 2 or 3 (varies by class) |
Tip: The Achievers Section carries higher weightage, so focus on mastering those concepts.
Follow the Right Books and Resources
Recommended materials for NSO include:
- SOF NSO Workbooks (class-wise)
- Previous Years’ Question Papers
- MTG Olympiad Skill Development Books
- NCERT textbooks (especially for Classes 6–10)
- Online Olympiad mock test platforms
Create a Realistic Study Plan
- Allocate 1–2 hours daily for preparation.
- Mix theory revision with MCQ practice.
- Reserve weekends for mock tests and sample papers.
Sample Weekly Study Plan:
| Day | Activity |
| Monday | Study 1 topic + 10 MCQs |
| Tuesday | Logical Reasoning Practice |
| Wednesday | Revise earlier topics + 1 mock test |
| Thursday | HOTS Questions Practice |
| Friday | Science Worksheet + Recap |
| Saturday | Full-length Mock Test |
| Sunday | Analyze test + Concept revision |
Take Mock Tests Regularly
Simulate the actual exam environment with timed mock tests. Analyze:
- Time taken per question
- Accuracy rate
- Section-wise performance
This will help in time management and identifying weak areas.
Focus on the Achievers Section
This section contains high-difficulty, concept-based questions. Here’s how to prepare:
- Solve HOTS questions from Olympiad books
- Apply real-life examples to understand advanced concepts
- Learn problem-solving strategies, not just facts
How to Register for NSO 2025-26
There are two ways students can register:
1. Through School
- SOF sends registration forms to schools.
- Schools collect and submit the filled forms to SOF.
- Fee: Usually ₹150 per student (varies by school)
2. Individual Registration (Online)
If your school is not participating:
- Visit www.sofworld.org
- Choose “Individual Student Registration”
- Submit details and pay the fee online
Important NSO 2025-26 Dates
| Events | Dates |
| Exam Date (Set A) | Thursday, 13th November 2025 |
| Exam Date (Set B) | Thursday, 27th November 2025 |
| Exam Date (Set C) | Thursday, 11th December 2025 |
| Result Announcement | January 2026 (Tentative) |
Note: Schools can choose any one of the three dates.
Check NSO Results
- Visit the official SOF website
- Click on “NSO Results”
- Enter Roll Number in format: SchoolCode-Class-Section-RollNo
The result includes marks, rank, and student’s performance report.
Practice NSO Sample Papers
Solving previous years’ question papers is one of the most effective ways to prepare.
| Class | Sample Paper Links |
| Class 1 | Available on SOF Website |
| Class 5 | Olympiad practice booklets |
| Class 8 | MTG Sample Paper Books |
| Class 10 | NSO Olympiad Trainer Platform |
Final Tips for Success
- Stay consistent with your preparation
- Focus on understanding, not just memorizing
- Practice under timed conditions
- Don’t ignore logical reasoning
- Track progress with mock tests
Conclusion
Preparing for SOF NSO 2025-26 requires planning, discipline, and the right resources. With a structured approach, students can excel not only in the Olympiad but also gain an edge in academics. This exam is a stepping stone toward nurturing scientific curiosity and analytical ability from a young age. Start early, stick to your plan, and success will follow.
NSO Preparation 2025-26 FAQs
1. What is the best way to start preparing for NSO 2025-26?
Answer: The best way to start is by understanding the syllabus and exam pattern. Begin with NCERT or school textbooks to build your basics, then move on to Olympiad-specific workbooks and sample papers. Daily practice of MCQs and regular mock tests will strengthen your preparation.
2. How much time should I dedicate daily for NSO preparation?
Answer: Ideally, students should dedicate 1 to 2 hours per day consistently. Focus more on quality study time—concept clarity, regular revision, and solving sample questions matter more than the number of hours.
3. Are NSO questions based only on the school syllabus?
Answer: Yes, NSO questions are based on the CBSE/ICSE/state board curriculum, but they also include higher-order thinking (HOTS) questions that test application and reasoning. Preparing with Olympiad-specific books helps bridge this gap.
4. How important is the Achievers Section in the NSO exam?
Answer: The Achievers Section is crucial as it carries higher marks per question (2–3 marks) and is designed to test deeper understanding. Scoring well in this section can significantly boost your overall rank.
5. Where can I get NSO sample papers and mock tests?
Answer: You can find sample papers on the official SOF website, in MTG and SOF Olympiad workbooks, and on online platforms like Olympiad Trainer. Practicing these regularly will help improve speed, accuracy, and confidence.
