🏆SilverZone iOS 2025–26 – International Olympiad of Science (कक्षा 1–5) Complete Guide
The International Olympiad of Science (iOS) is an annual academic competition conducted by the SilverZone Foundation, New Delhi, for students from Classes 1–12. This Olympiad evaluates core understanding in Physics, Chemistry, Biology, Environmental Science, and Scientific Reasoning. 👉 In alignment with NEP 2020 & NCF 2023, iOS promotes problem‑solving, inquiry‑based learning, and conceptual clarity in science. It builds a strong foundation for competitive exams and nurtures scientific temper and curiosity.
👉 Official: SilverZone iOS |
SilverZone Exam Schedule
🔔 Notification (सूचना)
- Exam Dates (Level‑1): 19 November 2025, 16 December 2025
👉 Schools will choose one date for their students. Official Schedule - Mode: Offline (school‑based, during school hours)
- Duration: 40 minutes (Classes 1–5)
- Fee: ₹150 (approx.) per student (India)
- Language: English only
🏛 Organizer
- Conducted by: SilverZone Foundation, New Delhi (educational non‑profit)
- Other Olympiads: iOM (Mathematics), iOEL (English), iIO (Informatics/Computer), SKGKO (GK), iRAO (Reasoning), ISSO (Social Studies), etc.
- Helpline: 011‑69114100 (30 Lines) | Email: info@silverzone.org
🎯 Objective
- Develop scientific reasoning and problem‑solving ability
- Strengthen fundamentals in Physics, Chemistry, Biology & EVS
- Provide a competitive platform at national & international levels
📘 Eligibility
- Open for Classes 1–12; this guide focuses on Classes 1–5
- Students must be enrolled in a school registered with SilverZone
- Applications through schools only (no direct individual registration)
📑 Exam Pattern (Classes 1–5)
| Class | No. of Questions | Duration | Sections |
|---|---|---|---|
| Class 1 | 25 | 40 min | Science + Reasoning |
| Class 2 | 25 | 40 min | Science + Reasoning |
| Class 3 | 30 | 40 min | Science + Reasoning |
| Class 4 | 35 | 40 min | Science + Reasoning |
| Class 5 | 40 | 40 min | Science + Reasoning |
Marking: Generally 1 mark per question • No negative marking • Higher classes may include HOTS items.
📚 Syllabus (Class 1–5)
Class 1
- Living & Non‑living, My Body & Health, Plants & Animals around us, Weather & Seasons, Safety & Hygiene, Basic Reasoning
Class 2
- Food & Digestion (intro), Housing & Clothing, Plants & Animals (habitats), Air, Water & Weather, Human Body (senses), Simple Machines (intro), Reasoning
Class 3
- Human Body (organs), Plants (functions), Animals (adaptations), Matter (states – intro), Force & Work (basic), Light & Sound (intro), Our Environment, Reasoning
Class 4
- Teeth & Digestion, Circulatory & Respiratory basics, Reproduction in Plants, Soil & Water, Energy (heat, electricity – intro), Earth & Space (planets), Environmental Care, Reasoning
Class 5
- Nervous & Skeletal basics, Health & Disease (intro), Photosynthesis & Food Chains, Properties of Matter, Simple Machines, Light, Shadow & Reflection, Earth, Moon & Natural Resources, Environmental Issues, Logical Reasoning
Achievers Section (HOTS): Higher‑order analytical questions from above syllabus.
🏅 Awards & Recognition
- International Toppers (Top 3): Cash Awards + Medals + Certificates
- Zonal Winners: Cash prizes (up to ₹5,000) + Medals + Certificates
- School Level: Medal of Distinction + Merit Certificates for class toppers
- Educators: Best Principal & Teacher awards
📝 Registration (How To)
- School registers with SilverZone Foundation
- Collect student details & fee (₹150 per student)
- Submit entries to SilverZone (suggested minimum 25 students per school)
- SilverZone issues roll numbers & conducts exam at school
📒 Preparation Strategy
- Study NCERT/EVS & Science (class‑wise)
- Practice SilverZone Workbooks & Sample Papers
- Revise Previous Year Papers
- Weekly mock tests (40‑minute timer) + accuracy tracking
📥 Downloads
- iOS 2025–26 Syllabus (PDF) – Coming Soon
- Sample Papers (PDF) – Available Soon
- Previous Year Papers – on the official website
❓ FAQs
Negative Marking? No
Class‑wise Papers? Yes, difficulty & distribution vary by class.
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