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NSO Science Olympiad 2024-25 Exam Guide for Students

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NSO Eligibility, Exam Pattern & Syllabus 2024-25

The NSO Science Olympiad is a national-level science exam designed for students in Classes 1 to 12 who want to challenge their scientific knowledge and reasoning skills. On this page, you’ll find complete information about NSO 2024-25—including eligibility, exam dates, detailed syllabus, sample and previous year papers, and result updates. Whether you’re preparing for your first Olympiad or aiming for a top rank, this guide gives you the trusted resources, tips, and practice you need to succeed in the NSO Science Olympiad.

National Science Olympiad

Start Your NSO Science Olympiad Preparation – Practice, Papers & Expert Guidance

The NSO Science Olympiad is one of India's most recognized science competitions for school students, testing their scientific application, logical reasoning, and higher order thinking. Organized by the SOF, it provides students the opportunity to benchmark their skills nationally and internationally. This guide includes latest exam dates, eligibility, syllabus, exam pattern, registration process, and official resources to help aspirants prepare with confidence.


NSO Science Olympiad Important Dates

Event NSO 2024–25 Dates
Registration Window May – September 2024 (Varies by School)
Exam Date (Set 1) 18th October 2024
Exam Date (Set 2) 12th November 2024
Exam Date (Set 3) 3rd December 2024
Admit Card Release 2 weeks before exam
Level-1 Result January 2025
Level-2 Exam February 2025 (Tentative)
Level-2 Result March 2025 (Tentative)

NSO Science Olympiad Eligibility Criteria

  • Eligible Students: Enrolled in Classes 1–12 for the 2024–25 academic year
  • Participation Mode: Registration through school only (no individual entries)
  • Minimum Group: At least 10 students per school
  • International Students: Candidates from outside India can also participate via their schools
  • Fee: ₹125 in India/Nepal/Bhutan/Bangladesh, US $9 elsewhere

NSO Science Olympiad Syllabus & Subjects

The NSO syllabus is designed to evaluate scientific concepts, analytical abilities, and logical reasoning at each academic level. Subjects and question types vary by grade, focusing on core science fundamentals as well as higher order skills. The exam is mapped to CBSE, ICSE, and major state boards, with additional application/problem-solving questions for advanced levels.

  • Logical Reasoning: Series, analogies, verbal and non-verbal reasoning, classification, patterns
  • Science:
    • Primary: Life science, basics of living/non-living, plants, animals, our body, health, food, environment
    • Middle: Physics, Chemistry, Biology (curriculum-aligned)
    • Senior: Advanced Physics, Chemistry, Maths/Biology with focus on concepts and application
  • HOTs (Achievers): Higher Order Thinking (multistep/problem-based questions)

For the official and class-wise topic list, visit the SOF NSO Syllabus page.


NSO Science Olympiad Exam Pattern

Class Group Total Questions Subjects Sections Marks/Question Negative Marking
Classes 1–4 35 Science, Maths, Reasoning Logical Reasoning, Science, Achievers 1 (Science, Reasoning), 2 (Achievers) No
Classes 5–10 50 Science, Maths, Reasoning Logical Reasoning, Science, Achievers 1 (Science, Reasoning), 3 (Achievers) No
Classes 11–12 50 Physics, Chemistry, Maths/Bio PC, HOTs, Maths/Bio 1 (Core), 3 (HOTs) No

NSO Science Olympiad Registration Process

  1. Visit your school’s SOF Olympiad coordinator during the registration window (May–September 2024).
  2. Fill out the NSO application form provided by the school and submit the registration fee.
  3. Confirm your details and preferred exam set/date as assigned by the school.
  4. Collect your admit card from the school in due time before the exam.

NSO Science Olympiad Preparation Tips

  • Thoroughly review the updated NSO syllabus and identify class-wise important topics.
  • Solve previous year NSO question papers for real exam exposure.
  • Attempt mock tests in a timed setting to improve speed and accuracy.
  • Practice logical reasoning and HOTs questions for higher marks.
  • Summarize concepts through self-made notes and frequent revision sessions.
  • Use online courses, expert guidance, and science olympiad books for targeted preparation.

NSO Science Olympiad Details Mentioned in the Admit Card

  • Student Name, School Name, and Class
  • Unique Roll Number
  • Exam Date, Time, and Slot (Set 1/2/3)
  • Exam Centre Address (if applicable)
  • Important instructions for exam day

NSO Science Olympiad Results & Cut-Off Announcement

SOF releases NSO result and cut-off lists typically within 6–8 weeks after each level. Results can be accessed on the official SOF portal or through participating schools. Qualified candidates for Level-2 (for eligible classes) are notified based on the announced cut-off criteria. Updates and answer keys are available on the SOF official website, with rank lists and eligibility for medals/awards clarified post-declaration.


What to Do After the NSO Science Olympiad Exam

  • Check the SOF Result Portal and confirm your scores with the published answer key sets.
  • Review sectional performance to understand strengths and improvement areas.
  • If qualified, prepare for Level-2 with advanced practice and targeted revision.
  • Explore higher-level Olympiads such as IJSO Science Olympiad Guide or compare with NSEJS Science Olympiad for further advancement.

The NSO Science Olympiad provides a structured pathway for students to test their science aptitude nationally and internationally. This guide offers the latest on NSO eligibility, syllabus, registration steps, exam pattern, and official updates—along with curated previous year papers and internal links to keep your preparation on track and exam ready.

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FAQs on NSO Science Olympiad 2024-25 Exam Guide for Students

1. What is the NSO Science Olympiad?

The NSO Science Olympiad is a national-level science exam conducted by the Science Olympiad Foundation (SOF) for students in Classes 1–12. It tests scientific aptitude, logical reasoning, and problem-solving abilities across various school grades.

  • Open to students of Classes 1 to 12
  • Assesses science, HOTs (Higher Order Thinking Skills), and logical reasoning
  • Includes two exam levels for Classes 3–12
  • Recognized by many schools in India and abroad

2. Who is eligible for NSO 2024-25?

All students enrolled in Classes 1–12 for the academic year 2024–25 are eligible to participate in the NSO Science Olympiad through their schools.

  • Must be registered via school (no individual entries allowed)
  • International students can also participate
  • School must register at least 10 students to be eligible

3. What is the registration fee for NSO?

The registration fee for NSO is INR 125 per student in India, Nepal, Bhutan, and Bangladesh, and USD $9 for students in other countries.

  • Collected by the school at the time of registration
  • No individual registrations permitted; only through schools

4. What is the exam pattern and marking scheme for NSO 2024–25?

The NSO exam is a one-hour written test consisting of multiple-choice questions (MCQs). It has no negative marking and the structure varies by class group:

  • Classes 1–4: 35 questions (1 mark for reasoning/science, 2 marks for HOTs)
  • Classes 5–10: 50 questions (1 mark for reasoning/science, 3 marks for HOTs)
  • Classes 11–12: 50 questions (1 mark for core, 3 marks for HOTs)
  • No negative marking

5. What is the syllabus for NSO Science Olympiad?

The NSO syllabus is based on the current academic curriculum for Classes 1–12 and includes topics from Science (Physics, Chemistry, Biology), Logical Reasoning, and HOTs (Higher Order Thinking Skills).

  • Classes 1–4: General Science (plant, animal, body, environment basics), reasoning
  • Classes 5–10: Physics, Chemistry, Biology (aligned with CBSE, ICSE, and major state boards), reasoning
  • Classes 11–12: Physics, Chemistry, Mathematics/Biology (as per stream), higher-order questions

6. How can I download NSO previous year papers and sample papers?

You can download NSO previous year papers, sample papers, and solutions from trusted educational portals such as Vedantu or the official SOF website.

  • Available for each class
  • Include both questions and answer keys
  • Helpful for practicing and analyzing exam trends

7. What are the important dates for NSO 2024–25?

The important dates for NSO 2024–25 include registration deadlines and exam schedules as set by SOF.

  • Registration: May to September 2024 (varying by school)
  • Exam Dates: Set 1 – 18th October 2024; Set 2 – 12th November 2024; Set 3 – 3rd December 2024
  • Results: Level 1 in January 2025, Level 2 in March 2025

8. Is there any negative marking in the NSO exam?

There is no negative marking in the NSO Science Olympiad for any class or section.

  • Attempt every question without fear of penalty
  • Encourages participation and thorough attempt of the paper

9. What prizes and awards can students win in NSO?

Top performers in the NSO Science Olympiad can win awards at international, zonal, and school levels.

  • International/Zonal Rank 1: Rs. 5,000 + Gold Medal + Certificate
  • Zonal Rank 2: Rs. 2,500 + Silver Medal + Certificate
  • Zonal Rank 3: Rs. 1,000 + Bronze Medal + Certificate
  • School/Class Toppers: Medal and certificate, if at least 10 students participate per class

10. How are NSO results announced and how to check them?

The NSO results are typically released 6–8 weeks after the exam and can be checked online or through your school.

  • Check online: SOF official results portal with your roll number
  • Check via school: Results are sent to school coordinators
  • Level 1 results in January 2025; Level 2 in March 2025 (tentative)

11. Which is the toughest science olympiad?

The NSO Science Olympiad is one of the most popular school-level science competitions, but toughness varies by exam and participant experience.

  • NSO is suitable for Classes 1–12; other Olympiads like IJSO or NSEJS are for higher classes and have advanced-level questions
  • SOF NSO is designed to be accessible and gradually challenging as per the class

12. What level is the NSO Olympiad?

The NSO Olympiad has up to two levels:

  • Level 1: For classes 1–12 (all students)
  • Level 2: For qualifying students of Classes 3–12 based on Level 1 performance

Each level increases in difficulty to identify top science talent.