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NSO — National Science Olympiad

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NSO — National Science Olympiad

SOF NSO practice — physics, chemistry, biology & reasoning

20-question mock20 min— pass markIndia

Single questions with instant feedback — no timer, learn as you go.

Exam blueprint

What this exam covers

6 topics · drawn across your practice and mock
01Physics
20%4 questions
02Chemistry
20%4 questions
03Biology
20%4 questions
04Logical Reasoning
20%4 questions
05Everyday Science
10%2 questions
06Achievers Section
10%2 questions
Your study path
Master this exam, topic by topic
Drill one topic at a time. After each session you'll see where you went wrong and can retake until you've got it.
Questions per session
View full mastery board →
Official source
SOF
The Science Olympiad Foundation conducts the IMO, NSO, IEO and NCO olympiads.
AceMark is an independent practice tool, not affiliated with the exam authority. Always confirm the current syllabus, fees and dates on the official site.
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Frequently asked questions

Is the NSO — National Science Olympiad practice test free?

Yes. The core NSO — National Science Olympiad practice on AceMark is free to start — no credit card needed. Sign in (takes 10 seconds) if you'd like to track your progress, save attempts, and unlock the Mentor. Otherwise, browse and explore questions without an account.

How many questions are in the NSO — National Science Olympiad quiz?

Each NSO — National Science Olympiad attempt draws 20 questions and runs for about 60 minutes under realistic timed conditions.

Can I retake the NSO — National Science Olympiad test, and are the questions randomised?

Yes. Every attempt pulls a fresh, randomised set of questions, so you can't memorise your way through — you retake it until you genuinely know the material.

What score do I need to pass the NSO — National Science Olympiad?

The pass mark used in this simulation is —. AceMark scores every attempt instantly and shows which topics to review.