NSO Exam Date:11 Dec' 25 - 11 Dec' 25
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.
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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.
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 |
|
Official website | sofworld.org |
Also, check - NSO Sample Papers
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.
Section | Syllabus |
Section 1 | Physics:
|
Chemistry:
| |
Section 2 | Higher Order Thinking Questions - Syllabus as per Section 1. |
Section 3 | Mathematics:
|
or | |
Biology:
|
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 |
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.
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)
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.
The SOF Foundation will conduct the NSO examination on November 13, November 27, and December 11, 2025, for Sets A, B, and C, respectively.
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.
On Question asked by student community
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!
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