NSO
National Science Olympiad Practice Tests
The NSO is a premier school science competition covering Physics, Chemistry, and Biology alongside logical reasoning and higher-order thinking questions for Classes 1–12.
- Organizer
- Science Olympiad Foundation (SOF)
- Grades
- Classes 1–12
- Exam months
- November – February
- Duration
- 60 minutes
Exam structure
| Section | Classes 1–4 | Classes 5–12 |
|---|---|---|
| Logical Reasoning | 10 | 15 |
| Science | 25 | 35 |
| Achievers Section | 5 | 10 |
| Total questions | 40 | 60 |
Duration: 60 minutes. Counts follow the published SOF pattern and may change between years — check sofworld.org.
How OlympiadLive helps
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Every question explained so you learn from each mistake.
NSO full mock exams by class
Key topics
PhysicsChemistryBiologyEnvironmental ScienceLogical ReasoningScientific Reasoning