In this blog, we will cover everything you need to know about the NSO Exam Date 2025 – from the complete exam schedule and registration process to syllabus, exam pattern, and preparation tips.
National Science Olympiad (NSO) has been thought to be one of the most anticipated competitive examinations among school kids in India and elsewhere. It is an academic test in the form of Class 1 to Class 12 scientific knowledge assessment test, and is administered and organized by Science Olympiad Foundation (SOF). NSO admits lakhs of students in every year to show their talent and to gain recognition in the school, zonal, national, and sometimes international sphere. The NSO Exam Date 2025 refers to the year 2025 which is officially written. This will be administered after three days (November 13, 2025, November 27, 2025, and December 11, 2025). The schools can choose to attack any of these dates as they please. The background of the exam time may be of help to the students to map a proper study routine, stick to it and develop relevant course of action in order to excel in Olympics.
NSO is a science competition taking place at the national level, which stimulates the formation of a scientific purpose and a rational attitude in young learners. The exam is administered each year on two different levels, organized by the Science Olympiad Foundation (SOF):
The Olympiad not only evaluates the student's knowledge of the concepts of science, but it also evaluates their capabilities to apply knowledge in solving practical and analytical questions.
Offering students an opportunity to reinforce their ideas or develop a scientific mindset, the National Science Olympiad (NSO) is a national-level science competition. The exam is sponsored by the Science Olympiad Foundation (SOF) and is an annual event, hosted by new locales each year, that focuses on application-based learning, problem solving, and logical thinking. As per the year 2025, the NSO Exam Date 2025 would be on November 13, November 27, and December 11, 2025. The students (Class 1 to 12) can take part in it, and the test will be given by the schools in the offline mode.
| Particulars | Details |
|---|---|
| Exam Name | National Science Olympiad (NSO) |
| Conducting Body | Science Olympiad Foundation (SOF) |
| Eligibility | Class 1 to 12 students |
| Mode of Exam | Offline (Pen & Paper) |
| NSO Exam Date 2025 | First: November 13, 2025 Second: November 27, 2025 Third: December 11, 2025 |
| Duration | 60 Minutes |
| Exam Levels | Level 1 (All Classes), Level 2 (Class 3–12 Qualifiers) |
| Type of Questions | Multiple Choice Questions (MCQs) |
| Result Date | January 2026 (tentative) |
The National Science Olympiad (NSO) 2025 has very simple and student-friendly eligibility rules. The test is open to any type of participant, so it is one of the most inclusive Olympiads in India. The eligibility criteria are listed below:
1. Class Eligibility:
2. School Requirement:
3. Board Affiliation:
4. Minimum Marks:
5. International Participation:
The National Science Olympiad (NSO) 2025 follows a regular exam format in which an examiner not only examines the quality of knowledge that a student possesses in the area of science, but his ability and competence to reason and decide logically and utilize the knowledge practically. The exam is offered on two different levels, Level 1 (All students taking the exam, 1-12 classes, Level 1) and Level 2 (Currently, selective students, 3-12 classes, Level 2).
Key Features of NSO Exam Pattern 2025
Level 1 Exam Pattern
| Class | Sections | No. of Questions | Marks |
|---|---|---|---|
| Class 1–4 | Logical Reasoning, Science, Achievers’ Section | 35 | 40 |
| Class 5–12 | Logical Reasoning, Science, Achievers’ Section | 50 | 60 |
For Class 1–4
| Section | No. of Questions | Marks per Question | Total Marks |
|---|---|---|---|
| Logical Reasoning | 5 | 1 | 5 |
| Science | 25 | 1 | 25 |
| Achievers’ Section | 5 | 2 | 10 |
| Total | 35 | – | 40 |
For Class 5–12
| Section | No. of Questions | Marks per Question | Total Marks |
|---|---|---|---|
| Logical Reasoning | 10 | 1 | 10 |
| Science | 35 | 1 | 35 |
| Achievers’ Section | 5 | 3 | 15 |
| Total | 50 | – | 60 |
The curriculum used to establish the NSO syllabus 2025 is one that is mandated by CBSE, ICSE, and other State Boards. Although most of the syllabus is quite similar to that in school textbooks, there are also exams in Logical Reasoning and the Achievers Section to examine higher-order thinking abilities.
Here is the class-wise syllabus for NSO 2025:
| Class | Logical Reasoning | Science Topics |
|---|---|---|
| Class 1 | Patterns, Odd One Out, Analogy, Coding-Decoding, Mirror/Water Images | Plants, Animals, Human Body, Good Habits, Air, Water, Weather, Surroundings |
| Class 2 | Analogy, Geometrical Shapes, Ranking, Calendar, Coding-Decoding | Plants & Animals, Human Body, Food, Housing, Transport, Air, Water, Rocks, Earth & Environment |
| Class 3 | Series, Venn Diagrams, Direction Sense, Analogy, Coding-Decoding | Living & Non-Living, Plants, Animals, Birds, Human Body, Food, Matter, Light, Air, Water, Weather, Space |
| Class 4 | Classification, Calendar, Embedded Figures, Patterns, Coding-Decoding | Plants, Animals, Human Body & Health, Food, Matter, Force, Work, Energy, Earth & Universe, Environment |
| Class 5 | Analogy, Classification, Venn Diagrams, Coding-Decoding | Plants, Animals, Human Body, Food & Health, Matter, Work, Force, Energy, Air, Water, Weather, Solar System, Environment |
| Class 6 | Series, Mirror/Water Images, Blood Relations, Venn Diagrams | Motion, Light, Electricity, Magnetism, Living Organisms, Plant/Animal Nutrition, Health, Materials, Solar System |
| Class 7 | Mathematical Operations, Coding-Decoding, Blood Relations, Venn Diagrams | Nutrition, Respiration, Reproduction, Motion & Time, Heat, Acids & Bases, Soil, Weather, Light, Environment |
| Class 8 | Series, Blood Relations, Mathematical Operations, Coding-Decoding | Crop Production, Microorganisms, Cell Structure, Metals, Coal & Petroleum, Combustion, Friction, Sound, Pollution |
| Class 9 | Analogy, Coding-Decoding, Puzzle Test, Direction Sense | Matter, Atoms & Molecules, Motion, Force & Laws, Work & Energy, Sound, Tissues, Diversity, Natural Resources |
| Class 10 | Series, Puzzle Test, Mathematical Operations, Coding-Decoding | Chemical Reactions, Acids & Bases, Carbon Compounds, Periodic Table, Life Processes, Reproduction, Electricity, Magnetism, Environment |
| Class 11 | Series, Venn Diagrams, Analytical Reasoning, Blood Relations | Units & Measurements, Laws of Motion, Gravitation, Thermodynamics, Oscillations, Waves, Cell Biology, Plant/Animal Physiology, Biomolecules |
| Class 12 | Analytical Reasoning, Coding-Decoding, Puzzles | Electrostatics, Current Electricity, Magnetism, Optics, Atoms & Nuclei, Semiconductors, Solid State, Chemical Kinetics, Inheritance, Evolution, Ecology, Biotechnology, Reproduction |
Registration for the NSO exam is done through schools only. Students cannot register individually.
Registration Process:
Registration Fee:
The Science Olympiad Foundation (SOF) will organise the National Science Olympiad (NSO) 2025 on three dates. Each school may choose a single date that is most appropriate with respect to its school calendar. Having the plan ahead of time helps students plan systematically.
NSO 2025 – Key Dates
| Event | Date |
|---|---|
| Registration Start Date | June 2025 |
| Registration Deadline | September 2025 |
| NSO Exam Date 2025 | November 13, 2025 (Thursday), November 27, 2025 (Thursday), December 11, 2025 (Thursday) |
| Result Declaration | January 2026 (Tentative) |
The NSO Exam 2025 results will be declared by the Science Olympiad Foundation (SOF) in January 2026 (Tentative). The results will be posted on the official SOF site, and the scorecards will also be sent to schools. All participants will receive a Students Performance Report (SPR), which will aid in presenting more specific feedback on their performance and consumer strengths, as well as areas to be improved.
SOF is providing scholarships, money, medals, and certificates to the best performers among the students at various levels, such as International, Zonal, and School.
Awards at the International Level:
Awards at Zonal Level:
Awards at School Level:
NSO is an exam that should be approached smartly, as it is an application-based exam and not through pure memory. Here are some preparation tips:
1. Know the Syllabus Thoroughly
2. Strengthen Conceptual Knowledge
3. Practice Logical Reasoning
4. Solve Previous Year Papers
5. Use Olympiad Workbooks and Sample Papers
However, besides being an exam, National Science Olympiad (NSO) 2025 is also where students have a chance to refine their knowledge in the science and their thinking capabilities, and to find solutions to problems. There are several advantages associated with getting involved in NSO that extend beyond what students learn at school and can lead to future academic success.
1. Strengthens Scientific Concepts
2. Develops Logical and Analytical Skills
3. Exposure to National and International Competition
4. Recognition and Awards
5. Builds Confidence and Interest in Science
National Science Olympiad (NSO) 2025 can prove to be the best place where classes 1 through 12 can showcase their ability to think scientifically, logically, and cognitively. Exam tests that will be conducted on Novermber 13, Novermber 27, and December 11, 2025, which are not very rushed. The Olympiad enhances both basic ideas and helps to build confidence and exposure on a national and global scale. From recognition in the form of awards, medals, and scholarships to valuable Student Performance Reports (SPR), every participant benefits from this journey.
Download class-wise Mock Tests & Answer Keys for NSO Stage 2 preparation (PDF format).
| Class | Paper | Mock Test PDF | Answer Key PDF |
|---|---|---|---|
| 6 | Level 2 PYP 2012–17 | 📄 Download | |
| 6 | Stage 2 Mock Test 1 | 📄 Test | ✅ Answer Key |
| 6 | Stage 2 Mock Test 2 | 📄 Download | |
| 7 | Level 1 PYP 2012 | 📄 Download | |
| 7 | Level 2 PYP 2012–17 | 📄 Download | |
| 7 | Stage 2 Mock Test 1 | 📄 Download | |
| 7 | Stage 2 Mock Test 2 | 📄 Test | ✅ Answer Key |
| 8 | Level 1 PYP 2014 | 📄 Download | |
| 8 | Level 2 PYP 2012–17 | 📄 Download | |
| 8 | Stage 2 Mock Test 1 | 📄 Test | ✅ Answer Key |
| 8 | Stage 2 Mock Test 2 | 📄 Test | ✅ Answer Key |
| 9 | Level 2 PYP 2012–17 | 📄 Download | |
| 10 | Level 1 PYP 2012 | 📄 Download | |
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