International Science Olympiad — SOF Olympiad
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SOF 1–12

International Science Olympiad

Master Science from Class 1 to 12

Physics, chemistry and biology concepts mapped to the school syllabus, with a reasoning section at higher classes.

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Exam Pattern

35 MCQs (60 min) · Level 1 & Level 2. Sections: Science, Achievers, Logical Reasoning.

Syllabus Overview

Physics, Chemistry, Biology mapped to CBSE/ICSE school syllabus with a Logical Reasoning section.

Chapter Weightage

Science (Physics & Chemistry) 40%

14 questions

Science (Biology & Environment) 35%

12 questions

Logical Reasoning 15%

5 questions

Achievers Section 10%

4 questions

Past Trend Analysis

Year Science Biology Reasoning Achievers
2024-25 40% 35% 15% 10%
2023-24 38% 36% 16% 10%
2022-23 42% 33% 15% 10%

Papers Available (20)

Previous Year Papers

2025–26 · Level 1 35 Qs · 60 min
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2024–25 · Level 1 35 Qs · 60 min
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2024–25 · Level 2 35 Qs · 60 min
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Mock Papers

Mock Set A 35 Qs · 60 min
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Mock Set B 35 Qs · 60 min
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Custom ISO Mock Session (06 Sep 2026) 27 Qs · 60 min
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Custom ISO Mock Session (07 Sep 2026) 27 Qs · 60 min
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Custom ISO Mock Session (09 Sep 2026) 27 Qs · 60 min
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Custom ISO Mock Session (09 Sep 2026) 10 Qs · 15 min
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Custom ISO Mock Session (09 Sep 2026) 27 Qs · 60 min
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Custom ISO Mock Session (10 Sep 2026) 27 Qs · 90 min
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Custom ISO Mock Session (13 Sep 2026) 27 Qs · 60 min
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Custom ISO Mock Session (14 Sep 2026) 10 Qs · 30 min
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Sample Papers

Sample Paper — Class-wise 20 Qs · 35 min
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ISO Sample · Class 10 · 2026-27 4 Qs · 60 min
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ISO Sample · Class 5 · 2026-27 4 Qs · 60 min
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ISO Sample · Class 6 · 2026-27 4 Qs · 60 min
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ISO Sample · Class 7 · 2026-27 6 Qs · 60 min
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ISO Sample · Class 8 · 2026-27 6 Qs · 60 min
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ISO Sample · Class 9 · 2026-27 2 Qs · 60 min
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Quick Facts

  • Science Olympiad Foundation
  • 1–12
  • Classes 1–12
  • 20 Papers Available
  • Question Bank Access

Top Educators

Khan Academy Science

Khan Academy

Strong foundational concepts

Meritnation

Meritnation

SOF-specific MCQ practice

Recommended Books

MTG ISO Champion

MTG Editorial · Book

SOF ISO Previous Year Papers

SOF · PYQ

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