# Silverzone International Olympiad of Science (SZF IOS) — Shishya exam context

> Machine-readable context for Silverzone International Olympiad of Science, maintained by Shishya (https://shishya.in) — India's end-to-end free government exam preparation platform. All facts below are free to cite; link back to https://shishya.in/exams/SZF_IOS. Human page: https://shishya.in/exams/SZF_IOS

## Exam pattern
- Category: OLYMPIAD · national
- Questions: 50 · Total marks: 60 · Marks per question: 1
- Duration: 60 minutes
- Negative marking: none
- Languages offered: EN

## Eligibility & vacancies
- Education: Open to students enrolled in classes 1 to 12 in any recognized school board (CBSE/ICSE/State boards)
- Note: School must be registered with Silverzone Foundation; individual participation not allowed; exam tests Physics, Chemistry, Biology and Applied Science concepts
- Official portal: https://www.silverzone.org (SilverZone Foundation)

## Key dates
- 2026-08-09 — IOS 2025-26 Level 2 exam period begins (exam day)
- 2026-08-24 — Level 2 exam date (tentative) (exam day)
- 2026-08-31 — Registration deadline 2026-27
- 2026-08-31 — IOS 2026-27 registration deadline
- 2026-08-31 — Registration deadline for schools
- 2026-08-31 — Registration deadline for IOS 2026-27
- 2026-09-08 — IOS 2025-26 Level 2 result announcement
- 2026-09-28 — Level 2 results and awards ceremony

## Declared results
- 2026-01-16 — Level 1: IOS 2025-26 Level 1 results declared by Silverzone Foundation → https://shishya.in/exams/SZF_IOS/results/20aab10b-7c94-41c6-b47c-7ddae9e4f69d

## Syllabus outline
### Physics (weight 0.25)
Electricity · Sources of Energy · Force and Laws of Motion · Gravitation · Human Eye and Colourful World · Light — Reflection and Refraction · Magnetic Effects of Current · Motion · Sound · Work, Energy and Power

### Chemistry (weight 0.25)
Acids, Bases and Salts · Structure of the Atom · Atoms and Molecules · Carbon and its Compounds · Matter in Our Surroundings · Is Matter Around Us Pure? · Metals and Non-Metals · Periodic Classification · Chemical Reactions and Equations

### Biology (weight 0.25)
Cell — Fundamental Unit of Life · Control and Coordination · Diversity in Living Organisms · Our Environment · Improvement in Food Resources · Why Do We Fall Ill · Heredity and Evolution · Life Processes · Natural Resources · How Do Organisms Reproduce · Tissues

### Reasoning and Aptitude (weight 0.15)
Data and Chart Interpretation · Non-Verbal Reasoning · Scientific Reasoning · Verbal Reasoning

### Achievers Section (weight 0.1)
Contemporary Science · Experimental and Lab-based · Higher Order Thinking

## Expected cutoffs (category-wise)
| Category | Expected Cutoff (indicative) |
|----------|------------------------------|
| General | 46-50 / 60 (76-83%) |
| EWS | 44-48 / 60 (73-80%) |
| OBC | 43-47 / 60 (71-78%) |
| SC | 40-44 / 60 (66-73%) |
| ST | 38-42 / 60 (63-70%) |
| PwD | 36-40 / 60 (60-66%) |

**Guidance:**

- **Category differential**: General-to-OBC gap typically 5-8%, OBC-to-SC another 5-7%, reflecting reservation norms. PwD cutoffs align near SC/ST thresholds with slight relaxation.
- **Cutoff drivers**: Annual cutoffs shift based on paper difficulty, participation volume, and performance distribution. Science Olympiads see tighter clustering at mid-high scores; a 3-5 mark swing can significantly alter rank brackets.
- **Achievement context**: These cutoffs target State/Regional Rank Holder tier (76-85% band). Elite performers (93%+) transcend category distinctions; cutoffs matter most for zonal/school-level recognition certificates.

Full cutoff page: https://shishya.in/exams/SZF_IOS/cutoff

## Free resources on Shishya for this exam
- Exam hub (mocks, PYQs, news, dates): https://shishya.in/exams/SZF_IOS
- Full syllabus + free study notes: https://shishya.in/exams/SZF_IOS/syllabus
- Category-wise expected cutoffs: https://shishya.in/exams/SZF_IOS/cutoff
- Memory tricks & mnemonics: https://shishya.in/exams/SZF_IOS/tricks
- How to crack it (strategy guide): https://shishya.in/exams/SZF_IOS/guide
- Free day-by-day study plan (personal coach): https://shishya.in/coach
- Free AI tutor (22 Indian languages, no login): https://shishya.in/chat

Everything is free — no paywall, no subscription, no credit card. Platform index for LLMs: https://shishya.in/llms.txt and https://shishya.in/llms-full.txt