Free ISO Sample Paper for Class 3 – PDF Download

Practice and Excel in International Science Olympiad (ISO) (Formerly NSO)


Prepare with confidence for the International Science Olympiad (ISO) by practicing with our meticulously crafted ISO sample paper for Class 3. ISO sample papers are designed to provide you with a comprehensive understanding of the ISO exam pattern, question types, and help you enhance your Science skills.


SOF Olympiad Trainer aims to provide every relevant study material to ace the ISO Olympiad to the student. Students can download Class 3 ISO Sample Paper from the website of SOF Olympiad Trainer, which is available in PDF format. Students can also attempt the sample paper online and analyze thier performance instantly.


To attempt online, click below.

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To download the ISO Sample Paper Class 3 in PDF form, click below.


The ISO exam is conducted annually by Science Olympiad Foundation, with the aim of challenging students problem solving ability while improving their analytical skills. ISO helps the students build a strong scientific acumen and a good base for higher classes.

Students can pass the ISO exam with flying colors by preparing holistically and practicing with the Class 3 ISO Sample Papers provided by SOF Olympiad Trainer. These Sample papers are designed same as the ISO exam which help the student to get an experience prior to the main Olympiad exam. Class 3 ISO Sample Papers helps the students analyze the pattern to prepare accordingly and get familiarized with the questions.



Benefits of practicing with Class 3 ISO Sample Papers:

  • By solving Class 1 ISO Sample Paper, students get an understanding of the main question paper.
  • The ISO Sample Paper gives an inkling of the sections of the main exam.
  • It gives the basic idea of the type of questions asked in each section.
  • Students get an idea on what to expect from the question paper and the difficulty level.


ISO class 3 exam has 3 sections with 35 questions carrying a total of 40 marks as explained below :

  • Logical Reasoning – This sections tests the reasoning ability of the candidate with questions and puzzles to challenge their thinking ability.
  • Science – This section aims to test the knowledge of science and the concepts it entails to judge their scientific acumen.
  • Achiever’s section – This sections tests the problems solving skills of the candidates with questions of high order thinking revolving around concepts of science.

The syllabus of ISO level-1 exam consists of questions with 60% syllabus of the current class and 40% syllabus of the previous class. The questions in level-2 exam come from the current class only. Similarly, the achiever’s section has questions from the current class only. To view full syllabus, click here.


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