NSO Class 11 Syllabus 2025 – SOF National Science Olympiad Exam Pattern & PDF
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  • NSO Class 11 Syllabus 2025 – SOF National Science Olympiad Exam Pattern & PDF

NSO Class 11 Syllabus 2025 – SOF National Science Olympiad Exam Pattern & PDF

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NSO Exam Date:11 Dec' 25 - 11 Dec' 25

Mangane PriyankaUpdated on 26 Aug 2025, 03:59 PM IST

The Science Olympiad Foundation released the SOF National Science Olympiad (NSO) Syllabus 2025 for Class 11. The SOF NSO syllabus includes three sections, namely Physics/Chemistry, the Achievers section, and Mathematics/Biology. Students can visit the official website at sofworld.org to access and download the SOF NSO syllabus 2025 for Class 11. The exam pattern of the NSO Olympiad for the 11th Class includes 50 questions with 60 marks in total.

This Story also Contains

  1. Highlights of SOF NSO 11th Syllabus & Exam Pattern 2025
  2. NSO Class 11 Syllabus 2025
  3. SOF NSO Class 11 Level 1 & Level 2 Exam Pattern 2025-26
  4. SOF NSO Eligibility Criteria 2025: Level 1 vs Level 2
NSO Class 11 Syllabus 2025 – SOF National Science Olympiad Exam Pattern & PDF
NSO Class 11 Syllabus 2025

The SOF Foundation will conduct the SOF NSO examination 2025 for the academic year 2025-26 on November 13, November 27, and December 11, 2025, for Sets A, B, and C, respectively. Students who want to appear for the National Science Olympiad must go through the entire syllabus section-wise to prepare well. Read the article to learn more about the NSO Class 11 syllabus 2025.

Highlights of SOF NSO 11th Syllabus & Exam Pattern 2025

Particulars

Details

Exam name

SOF National Science Olympiad 2025

Conducting body

Science Olympiad Foundation (SOF)

Total number of questions

50 questions

Total marks

60 marks

Exam duration

60 minutes (1 hour)

Exam Level

Level 1 and Level 2

Question type

Multiple Choice Questions (MCQs)

Number of sections in Level 1 and Level 2

  • Physics/Chemistry

  • Achievers Section

  • Mathematics/Biology

Official website

sofworld.org

Also, check - NSO Sample Papers

NSO Class 11 Syllabus 2025

The Science Olympiad Foundation released the NSO syllabus 2025 for Class 11 for all sections. There are a total of 3 sections that students need to complete preparation for the olympiad. Check out the table below to learn more about the detailed syllabus of the SOF NSO 11th Class.

SOF NSO 11th Class 2025 Syllabus: Section-Wise

Section

Syllabus

Section 1

Physics:

  • Units and Measurements,

  • Mechanics,

  • Properties of Matter,

  • Heat and Thermodynamics,

  • Oscillations & Waves.

Chemistry:

  • Some Basic Concepts of Chemistry,

  • Structure of an Atom,

  • Classification of Elements and Periodicity in Properties,

  • Chemical Bonding and Molecular Structure,

  • Thermodynamics,

  • Equilibrium,

  • Redox Reactions,

  • Organic Chemistry - Some Basic Principles and Techniques,

  • Hydrocarbons.

Section 2

Higher Order Thinking Questions - Syllabus as per Section 1.

Section 3

Mathematics:

  • Sets, Relations and Functions,

  • Logarithms,

  • Complex Numbers,

  • 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

Biology:

  • Diversity in the Living World,

  • Structural Organisation in Plants and Animals,

  • Cell: Structure and Functions,

  • Plant Physiology,

  • Human Physiology.

SOF NSO Class 11 Level 1 & Level 2 Exam Pattern 2025-26

The SOF proposed the same exam pattern for the level 1 and level 2. Students must note that the level 1 passed can appear for the 2nd level examination. Check out the table below to learn more about the NSO exam pattern for Class 11 for the two levels.

Class

Section

No. of Questions

Marks/Question

Total Marks

11th Class

Section – 1: Physics & Chemistry

25

1

25

Section – 2: Achievers Section

5

3

15

Section – 3: Mathematics/Biology

20

1

20


Grand Total

50


60

Segregation of the SOF NSO Class 11 Syllabus 2025

  • 60% of the SOF NSO Level 1 Olympiad exam questions will be from the present 11th class syllabus.

  • 40% of the syllabus will be from the previous class.

  • The SOF NSO 11th Class Level 2 Olympiad exam questions will be from the present Class 11 syllabus only.

  • The Achievers section of the SOF NSO Class 11 syllabus questions will also be from the current class syllabus only.

SOF NSO Eligibility Criteria 2025: Level 1 vs Level 2

The National Science Olympiad is a competitive exam that challenges candidates to to showcase their skills and knowledge in various aspects of logical reasoning andd science. Check out the table below to learn more about the SOF NSO Eligibility criteria.

SOF NSO Level 1 Eligibility

SOF NSO Level 2 Eligibility

Students from Classes 1 to 12 from a recognised SOF school are eligible to participate.

Only students from classes 3 to 12 are eligible to participate in the SOF NSO Level 2 exam.

Candidates from a particular class can appear for that set of Olympiad only.

Candidates from Classes 1 and 2 are not eligible to take part in the olympiad.


The top 5% of the class-wise participating students in the NSO level 1 exam will be selected for the level 2.

Also, check -

Frequently Asked Questions (FAQs)

Q: Is there any difference between the SOF NSO level 1 and level 2 syllabus?
A:

No, there is no difference between the SOF NSO syllabus for levels 1 and 2. Both levels of the Olympiad include the same 3 sections.

Q: When will the SOF NSO 2025-26 examination be held?
A:

The SOF Foundation will conduct the NSO examination on November 13, November 27, and December 11, 2025, for Sets A, B, and C, respectively. 

Q: Where can I download the SOF NSO Class 11 Syllabus and exam pattern 2025?
A:

Students can visit the official website at sofworld.org to download the SOF NSO 11th Class 2025 syllabus and exam pattern. They can also check out the above article to access the NSO syllabus 2025-26.

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Questions related to NSO

On Question asked by student community

Have a question related to NSO ?

Keep checking the official SOF website.. once the exam series ends, the answer key pdfs will be available there for download.. u can check it under the section of 'Answer Keys 2025-26' and then search for ur exam that was NSO and then choose ur class.. and there u can download the pdf.

Hi Sneha

The Science Olympiad Foundation is conducting the Set A and Set B exams, which are taking place between 13 November to 27 November 2025. Recently, the NSO released the answer key on their official website. Set A, B and C exam answer key release separately, and the student accesses the answer keys to match the correct answer with their answer. If you want to NSO class 5 answer key, then you can click on the article SOF NSO Answer Keys 2025-26 from our official website careers360.

Best Wishes.

Hello,

You can get the SOF NSO all sets Answer Keys 2025-26 from the careers360 website. This website also provides previous years question papers, important dates, syllabus, exam patterns, marking schemes, question papers along with answer  keys, exam paper anlysis and preparation tips also.

Follow the link: https://school.careers360.com/articles/nso-answer-key

That's a smart step for verifying your performance! You can definitely find the NSO Answer Key for Set B on the provided resource page. The Science Olympiad Foundation (SOF) releases the answer keys for all sets and classes (1 to 12). Visit the link, scroll to the Answer Key section, and select your specific class to download the Set B PDF: https://school.careers360.com/articles/nso-answer-key . Use it to accurately calculate your score

Hello,

You can get the SOF NSO SET-B Question Paper with Answer Key from the Careers360 website. This website also provides previous year question papers, syllabus, important dates, exam patterns, marking schemes, question paper along with answer keys, exam paper analysis, preparation tips and many more.

follow the LINK: https://school.careers360.com/articles/nso-answer-key

I hope this answer helps you!