SOF National Science Olympiad (NSO) Answer Keys 2026: Download Class-wise OMR Sheet PDF
This document provides the official answer keys for the Science Olympiad Foundation (SOF) National Science Olympiad (NSO) for the 2025-26 academic year. It serves as a definitive resource for students, parents, and educators to check the accuracy of answers marked by participants in the NSO examination. The keys are organized by class and set, ensuring easy verification of results.
The SOF National Science Olympiad (NSO) is one of the most popular and challenging Olympiad exams for school students globally. The 2025-26 NSO tested the mathematical aptitude, problem-solving skills, and logical reasoning of millions of participants from various classes. Whether you are a student eager to verify your performance or an educator looking to evaluate results, having access to the official answer keys is essential for accurate assessment.
This resource provides the definitive and officially verified answer keys for the SOF NSO 2025-26 examination. These keys are systematically organized by class and paper set, allowing for quick and accurate comparison of marked answers against the correct solutions. Use these keys to calculate your final score, understand areas for improvement, and celebrate your successful participation in this prestigious mathematical competition.
SOF National Science Olympiad (NSO) Exam 2025-26: Key Highlights
This master guide consolidates all essential information for the upcoming National Science Olympiad (NSO) conducted by the Science Olympiad Foundation into a single reference table.
Category | Detailed Information |
| Organizer | Science Olympiad Foundation (SOF) |
| Target Classes | Class 1 to Class 12 |
| Registration | Through Schools only; ₹125 per student (India) |
| Format & Duration | 60 Minutes; Objective MCQs |
| Level 1 Eligibility | Open to all students from Classes 1 to 12 |
| Level 2 Eligibility | Classes 3 to 12 only; Top 5% internationally, top 25 zonal rankers, or class toppers |
| Paper Sections | Sec 1: Logical Reasoning, Sec 2: Mathematical Reasoning, Sec 3: Everyday Mathematics, Sec 4: Achievers Section (HOTS) |
| Marking (Sec 4) | 2 marks per question (Classes 1-4); 3 marks per question (Classes 5-12) |
| Exam Dates (Level 1) | Option 1: Mid-Oct 2025; Option 2: Late Nov 2025; Option 3: Mid-Dec 2025 |
| Exam Date (Level 2) | February 2026 |
| Results (Level 1) | Declared within 6-8 weeks after the examination |
| General Rewards | Student Quotient Report (SQR) & Participation Certificate for all |
| Major Prizes | International: Up to ₹50,000 + Gold Medal; Zonal: Up to ₹5,000 + Gold Medal |
| School Awards | Medals of Distinction and Gold Medals of Excellence for toppers |
SOF National Science Olympiad (NSO): SET A Answer Key 2025-26
Check the below table to download the SET A and B answer key of SOF NSO 2025-26. The answer key is provided for classes 1 to 12 for all the grades.
Set A - [Link to Answer Key - All Grades] |
Set B - [Link to Answer Key - All Grades] |
The release of the SOF NSO 2025-26 answer keys for Set A and Set B is a vital step for students aiming for the higher Level. By downloading the Class 1 to 12 Science Olympiad solutions, participants can ensure total transparency in their scoring and gain a competitive edge in their academic journey. Use these NSO PDF answer keys now to identify your strengths, address your weaknesses, and prepare for future National Science Olympiad challenges with confidence.
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Anisha Mishra is journalist with over 3 years of experience in covering the Indian education sector. She has worked extensively in the K12 domain, with focus on the state board as well as central board examinations, policy structure of seconday and higher secondary education as well as the entrance examinations like JEE, NEET, CLAT, etc. Her extensive experience in the domain has helped her provide students with concise accurate information in all aspectes of school life and education. Her key interest lies in decoding the changes in the curriculum, NEP implementation and changing education ecosystem in the country. Besides working, she enjoys traveling, exploring new places and cultures, and painting.
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