NSO Syllabus 2025 for Class 1 to 12: Check In Detail
Swati Singh5 Jun, 2025
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NSO Syllabus 2025: As per the announcement made by the Science Olympiad Foundation, the NSO 2025 will be held on 13th, 27th November 2025 and 11th December 2025. The National Science Olympiad (NSO) is a science competition for students in Classes 1 to 12. The National Science Olympiad (NSO), is going to test students' understanding in Logical Reasoning, and Science.
Students interested in getting ready for this competition need to read the National Science Olympiad Syllabus 2025 and Exam Pattern to learn about the test's requirements.
In the below section you can find the Class-wise and topic-wise SOF NSO Syllabus 2025 along with the exam pattern.
Also Read: SOF Olympiad Exams 2025
NSO Syllabus 2025
The NSO Syllabus 2025 is based on the academic curriculum of CBSE, ICSE, and several state boards. The SOF NSO Syllabus is structured on the basis of theoretically concept which is taught in the class room
In the National Science Olympiad Syllabus 2025 there are three sections namely, Logical Reasoning- focussing on questions about nonverbal and verbal reasoning, Science Section - includes currert and previous class Science Syllabus and Achievers Section - Carrying Higher Order Thinking Questions of topics in the Science Section.
The SOF NSO Syllabus differs class-wise from Class 1 to 12, with the exam consisting of multiple-choice questions.
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NSO Syllabus 2025 Highlights |
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Conducting Authority |
Science Olympiad Foundation (SOF) |
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Subjects For NSO Olympiad |
For Classes 1 to 10 - Logical Reasoning, Science and Achievers Section For Classes 11 to 12 - Physics/Chemistry, Achievers Sections and Mathematics/ Biology |
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Questions Pattern |
Multiple Choice Questions (MCQs) |
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Eligible Students |
Class 1 to Class 12 |
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SOF NSO Exam Pattern |
Class 1st to Class 4th: 35 questions for 40 marks Class 5th to Class 12th: 50 questions for 60 marks |
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Duration of Exam |
1 Hour (60 Minutes) |
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Official Website Link |
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National Science Olympiad Syllabus 2025 for Classes 1 to 12
As per the National Science Olympiad Syllabus, the questions of level-I Olympiad exams will be 60% from the current class syllabus and 40% from the previous class syllabus. Where as in the Level 2 Exams the entire questions will be from current class only. Below we have provided the Class-wise and Section-wise NSO SYllabus 2025.
Also Read: SOF Olympiad Syllabus 2025
NSO Syllabus 2025 For Class 1
A detailed overview is provided for NSO Syllabus for Class 1 in the below table.
| NSO Syllabus 2025 For Class 1 | |||
| Sections | Topics | ||
| Section 1: Logical Reasoning | Patterns, Odd One Out, Measuring Units, Geometrical Shapes, Spatial Understanding, Grouping, Analogy, Ranking Test, Problems based on Figures. | ||
| Section 2: Science | Living and Non-living Things, Plants, Animals, Human Beings and Their Needs, Good Habits and Safety Rules, Air and Water, Weather and The Sky. | ||
| Section 3: Achievers Section | Higher Order Thinking Questions – Syllabus as per Section – 2. | ||
NSO Syllabus 2025 For Class 2
The Naional Science Olympiad Syllabus for Class 2 is provided below. The topics covered in the olympiad objective-based questions are covered in the table.
| NSO Syllabus 2025 for Class 2 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Patterns, Odd One Out, Measuring Units, Geometrical Shapes, Analogy, Ranking Test, Grouping of Figures, Embedded Figures, Coding-Decoding.
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| Section 2: Science |
Plants, Animals, Human Body, Food, Housing and Clothing, Family and Festivals, Good Habits and Safety Rules, Transport and Communication, Air, Water and Rocks, Earth and the Universe.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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National Science Olympiad Syllabus 2025 For Class 3
NSO Syllabus for Class 3 for Logical Reasoning, Science and Achievers Sections are provided here.
| NSO Syllabus 2025 for Class 3 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Patterns, Analogy and Classification, Alphabet Test, Coding-Decoding, Ranking Test, Grouping of Figures and Figure Matrix, Mirror Images, Geometrical Shapes, Embedded Figures, Possible Combinations, Clock and Calendar.
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| Section 2: Science |
Plants and Animals, Birds, Food, Housing, Clothing and Occupation, Transport, Communication and Safety Rules, Human Body, Earth and Universe, Matter and Materials, Light, Sound and Force, Our Environment.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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Also Read: International Junior Science Olympiad 2025
NSO Syllabus 2025 For Class 4
Before starting the preparation the students must go through the NSO Syllabus for Class 4. This will give a boost to the candidates to prepare accordingly.
| NSO Syllabus 2025 for Class 4 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Patterns, Alphabet Test, Coding-Decoding, Ranking Test, Mirror Images, Geometrical Shapes and Solids, Embedded Figures, Direction Sense Test, Possible Combinations, Analogy and Classification, Clock and Calendar.
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| Section 2: Science |
Plants, Animals, Food and Digestion, Human Needs, Matter and Materials, Force, Work and Energy, Our Environment, Earth and Universe.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 5
The Comprehensive details of the NSO Syllabus for Class 5 are provided here.
| NSO Syllabus 2025 for Class 5 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Patterns, Analogy and Classification, Geometrical Shapes, Mirror and Water Images, Direction Sense Test, Ranking Test, Alphabet Test, Logical Sequence of Words, Puzzle Test, Coding-Decoding, Clock and Calendar.
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| Section 2: Science |
Animals, Human Body and Health, Plants, Natural Resources and Indian Heritage, Pollution and Calamities, Earth and Universe, Matter and Materials, Force and Energy.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 6
The Comprehensive details of the NSO Syllabus for Class 6 are provided here.
| NSO Syllabus 2025 For Class 6 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Verbal and Non-Verbal Reasoning.
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| Section 2: Science |
Motion and Measurement of Distances, Light, Shadows and Reflections, Electricity and Circuits, Fun with Magnets, Air Around Us, Sorting Materials into Groups, Separation of Substances, The World of Living (Characteristics of Living Beings, Parts of Plants, Body Movements in Animals and Adaptation), Components of Food.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 7
The topics to be covered as per the NSO Syllabus for Class 7 are provided here.
| NSO Syllabus 2025 For Class 7 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Verbal and Non-Verbal Reasoning
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| Section 2: Science |
Heat, Motion and Time, Electric Current and its Effects, Light, Acids, Bases and Salts, Physical and Chemical Changes, Nutrition in Plants and Animals, Respiration in Organisms, Transportation in Plants and Animals, Reproduction in Plants, Natural Resources and Their Conservation (Forests: Our Lifeline, Wastewater Story).
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 8
Here are the section-wise National Science Olympiad Syllabus 2025 for Class 8.
| NSO Syllabus 2025 For Class 8 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Verbal and Non-Verbal Reasoning.
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| Section 2: Science |
Crop Production and Management, Microorganisms, Coal and Petroleum, Combustion and Flame, Conservation of Plants and Animals, Reproduction and Endocrine System, Force and Pressure, Friction, Sound, Chemical Effects of Electric Current, Some Natural Phenomena, Light.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 9
Go through the details of the NSO Syllabus for Class 9 for the section-wise details in the below table.
| NSO Syllabus 2025 For Class 9 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Verbal and Non-Verbal Reasoning.
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| Section 2: Science |
Motion, Force and Laws of Motion, Gravitation, Work and Energy, Sound, Matter in Our Surroundings, Is Matter Around Us Pure, Atoms and Molecules, Structure of Atom, Cell-The Fundamental Unit of Life, Tissues, Natural Resources, Improvement in Food Resources.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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Also Read: SOF NSO Syllabus 2025 (Class-Wise)
NSO Syllabus 2025 For Class 10
Go through the details of the NSO Syllabus for Class 10 for the section-wise details in the below table.
| NSO Syllabus 2025 For Class 10 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Verbal and Non-Verbal Reasoning.
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| Section 2: Science |
Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and Its Compounds, Life Processes, Control and Coordination, Reproduction in Organisms, Heredity, Light- Reflection and Refraction, Human Eye and Colourful World, Electricity, Magnetic Effects of Electric Current, Our Environment and Its Management.
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| Section 3: Achievers Section |
Higher Order Thinking Questions – Syllabus as per Section – 2.
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NSO Syllabus 2025 For Class 11
Here are the section-wise National Science Olympiad Syllabus 2025 for Class 11.
| NSO Syllabus 2025 For Class 11 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
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| Section 2: Science | Higher Order Thinking Questions – Syllabus as per Section – 1. |
| Section 3: Achievers Section |
Sets, Relations and Functions, Logarithms, Complex Numbers & Quadratic Equations, Linear Inequalities, Sequences and Series, Trigonometry, Straight Lines, Conic Sections, Permutations and Combinations, Binomial Theorem, Statistics, Limits and Derivatives, Probability, Introduction to 3-D Geometry.
OR Diversity in the Living World, Structural Organisation in Plants and Animals, Cell: Structure and Functions, Plant Physiology, Human Physiology. |
NSO Syllabus 2025 For Class 12
Here are the section-wise National Science Olympiad Syllabus 2025 for Class 12.
| NSO Syllabus 2025 for Class 12 | |
| Sections | Topics |
| Section 1: Logical Reasoning |
Physics : Electricity and Magnetism, Electromagnetic Induction, Alternating current, Electromagnetic waves, Optics, Modern Physics, Semiconductor Electronics.
Chemistry : Solutions, Electrochemistry, Chemical Kinetics, The d- and f-Block Elements, Coordination Compounds, Haloalkanes and Haloarenes, Alcohols, Phenols and Ethers, Aldehydes, Ketones and Carboxylic Acids, Amines, Biomolecules. |
| Section 2: Science |
Higher Order Thinking Questions – Syllabus as per Section – 1.
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| Section 3: Achievers Section |
Relations and Functions, Inverse Trigonometric Functions, Matrices and Determinants, Continuity and Differentiability, Application of Derivatives, Integrals, Application of Integrals, Differential Equations, Vector Algebra, Three Dimensional Geometry, Probability, Linear Programming.
OR Reproduction, Genetics and Evolution, Biology in Human Welfare, Biotechnology, Ecology. |
NSO Exam Pattern 2025
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There are 3 sections as per the NSO Exam Pattern 2025- Logical Reasoning, Science, and Achievers Section.
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The National Science Olympiad level 1 is of 60 minutes duration
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35 objective-type (Multiple Choice) questions for classes 1 to 4
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50 objective-type (Multiple Choice) questions for classes 5 to class 10.
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NSO Olympiad medium is English Only.
| SOF NSO Exam Pattern 2025 | |||
| Class | Section | No. of Questions | Total Marks |
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1st to 4th
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Section – 1: Logical Reasoning | 5 | 5 |
| Section – 2: Science | 25 | 25 | |
| Section – 3: Achievers Section | 5 | 10 | |
| Grand Total | 35 | 40 | |
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5th to 10th
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Section – 1: Logical Reasoning | 10 | 10 |
| Section – 2: Science | 35 | 35 | |
| Section – 3: Achievers Section | 5 | 15 | |
| Grand Total | 50 | 60 | |
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11th & 12th
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Section – 1: Physics & Chemistry | 25 | 25 |
| Section – 2: Achievers Section | 5 | 15 | |
| Section – 3: Mathematics/Biology | 20 | 20 | |
| Grand Total | 50 | 60 | |
Also Read:
| SOF Olympiad 2025 | SOF Olympiad Syllabus 2025 | |
| STEMS India | PROMYS India | International Junior Science Olympiad Previous Year Questions |
NSO Syllabus 2025 FAQs
Where can I get the detailed NSO Syllabus 2025?
Is the SOF NSO Syllabus 2025 same for classes 1 to 12?
What sections are there in the National Science Olympiad Syllabus 2025?
What is the duration for the SOF National Science Olympiad?
What is the SOF NSO Exam Pattern 2025?
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