ISO Previous Year Papers – Class 1 to 10 PDFs with Answers

When you prepare for an exam, you don't want yourself behind in the race at any given point in time. In order to get the exact idea of how ISO exam paper will turn out, the best way is to go through SOF previous year papers PDF.
Exams like International Science Olympiad (ISO) always gets lot of attention from the students across the country and outside and we all acknowledge the fact that the competition gets stiffer with every passing year.


These ISO Previous Year Question Papers are the actual papers which have been used in the last terms. They give us a good insight of what kind of questions have been asked, what would be the difficulty level and how to manage time. You get a hands-on experience of how the paper would look like. Each ISO Paper is divided into 3 sections :
(i) Logical Reasoning
(ii) Questions based on ISO Syllabus
(iii) Achiever's section which mostly serves as the tie breaker.


Prepare confidently for the International Science Olympiad (ISO) with real previous year question papers designed by SOF (Science Olympiad Foundation). At SOF Olympiad Trainer, we offer:

  • 1 Free Previous Year Paper
  • 6 Premium Solved Papers
  • ✅ Available for Classes 1 to 10
  • ✅ Includes answer keys and solutions

Why Solve ISO Previous Year Question Papers?

  • Understand the types of questions asked by SOF
  • Improve accuracy and time management
  • Gain confidence in tackling Olympiad-level problems
  • Identify areas that need more revision

Each paper is available in PDF format and can be downloaded, printed, or practiced online.


How To Access The ISO Previous Year's Papers?

Simply Register with us to avail free access to a ISO Previous Year Paper.

You can also Purchase ISO Previous 6 Year's Papers which are part of our Learner's Package.


FREE IMO, ISO, ICSO, IEO & IGKO Previous Year Papers



35 - 50
Questions Per Paper

60
Minutes

Statistics

Performance
Analysis

ISO Previous Year's Papers are downloadable in PDF format. You can also download the PDF format of OMR Sheet for practice.
At SOF Olympiad Trainer, we provide ISO Previous Year Papers PDF of the last 6 years (1 set each) for classes 1 to 10.
These papers are given along with the answers and explanations.


ISO Previous Year Paper For Class 1


ISO Previous Year Paper For Class 2


ISO Previous Year Paper For Class 3


ISO Previous Year Paper For Class 4


ISO Previous Year Paper For Class 5


ISO Previous Year Paper For Class 6


ISO Previous Year Paper For Class 7


ISO Previous Year Paper For Class 8


ISO Previous Year Paper For Class 9


ISO Previous Year Paper For Class 10


Evaluate your preparation using these Previous Year Papers PDF. You can also look at other study materials on our website, such as Mock Tests, if you want to improve your mark and rank. Additionally, we offer reports and analyses that are very helpful for your planning. We advise you to purchase the appropriate content for yourself on SOF Olympiad Trainer in order to stay one step ahead and take joy in your Olympiad training.

FAQ

ISO previous year papers are actual questions from past Olympiad exams that help students understand exam pattern and improve performance.

You can download ISO previous year papers PDF from SOF Olympiad Trainer with solutions and practice features.

Yes, detailed solutions are available to help students understand concepts clearly.

Yes, you can attempt ISO previous year papers online with instant scoring and analysis.

Students should practice at least 3–6 papers to improve confidence and accuracy.



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Related Links

ISO Sample Papers

ISO Content

ISO Syllabus

ISO Previous Year Papers

ISO Mock Test Papers

ISO Level-2