SOF ISO Class 4 Science Olympiad Mock Tests & Sample Papers

Prepare for SOF International Science Olympiad (ISO) – Class 4

Give your child the perfect start for the SOF International Science Olympiad (ISO) (formerly NSO) with a powerful combination of free weekly mock tests, sample papers, and chapter-wise practice questions.

This Class 4 ISO Master Guide is designed to strengthen concepts, improve accuracy, and build confidence through structured practice aligned with the latest SOF syllabus and exam pattern.

Try the Weekly ISO Mock Test (Class 4)

Start practising instantly with a real exam-level mock test.

This is a sample weekly test. Get access to full mock tests, sample papers, and chapter-wise practice inside your dashboard.

Free to attempt • Instant access • No downloads required

What You Get – Complete ISO Preparation

Weekly ISO Mock Tests

• Full-length tests based on the latest ISO exam pattern
• 35 Questions
• Logical Reasoning + Science + Achievers Section
• Timed tests to improve speed and accuracy

ISO Sample Papers

• Free to view sample papers
• Based on latest exam trends and question patterns
• Ideal for revision and concept clarity

Chapter-Wise Science Tests

• Multiple tests for each topic
• Plants
• Animals
• Food and Digestion
• Human Needs
• Matter and Materials
• Force, Work and Energy
• Our Environment
• Earth and Universe

Strengthen concepts across all key Class 4 science topics with targeted practice and revision.

Logical Reasoning Practice (Section 1)

• Patterns
• Alphabet Test
• Coding-Decoding
• Ranking Test
• Mirror Images
• Geometrical Shapes and Solids
• Embedded Figures
• Direction Sense Test
• Possible Combinations
• Analogy and Classification
• Clock and Calendar

Develop logical thinking and problem-solving skills with structured reasoning practice aligned to the latest SOF exam pattern.

Achievers Section (HOT Questions)

Advanced Higher Order Thinking questions to help students score better in the 2-mark Achievers Section and improve rankings.

SOF ISO Exam Pattern – Class 4

• Logical Reasoning: 5 Questions × 1 mark = 5 marks
• Science: 25 Questions × 1 mark = 25 marks
• Achievers Section: 5 Questions × 2 marks = 10 marks
• Total: 35 Questions = 40 marks

NSO is Now Called ISO

The Science Olympiad Foundation (SOF) has updated the naming of the National Science Olympiad (NSO) to the International Science Olympiad (ISO).

While the name has changed, the syllabus, exam pattern, and difficulty level remain aligned with previous NSO exams.

Why Students Choose Olympiadtester

• Trusted Olympiad platform since 2014
• Proven results with international ranks
• Unlimited practice across mock tests and topics
• Updated as per latest SOF guidelines

How to Start

1. Click “Take Tests”
2. Register or log in
3. Access your complete ISO dashboard
4. Start practising instantly

All tests are free to attempt online. Downloadable worksheets and PDFs are available with a small upgrade.

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Explore More Class 4 Olympiad Preparation

• Class 4 Maths Olympiad (IMO) – Mock Tests & Sample Papers
• Class 4 English Olympiad (IEO) – Mock Tests & Sample Papers
• Class 4 General Knowledge Olympiad (IGKO) – Mock Tests & Sample Papers

Explore all subjects in one place: Class 4 Olympiad Preparation Hub