International Olympiad of Science (IOS)

International Olympiad of Science (iOS) is one of the best recommended exam for testing the competence and knowledge of a student in science. iOS has been organized at National and International level. It covers the CBSE/ ICSC and state board syllabus. Apart from syllabus, a part of exam paper is based on the Applied Science.

Benefits of iOS Olympiad Exam

In depth knowledge and preparation of subject
Analytical skills
Student performance report for each participating student.

Eligibility for iOS

Level 1 :- The language medium is English only. The examination is being conducted from 1st to 12th with the following details.

For Classes 1-2: 25 questions and the duration will be of 40 Minutes.
For Classes 3-5: 30 questions and the duration will be of 40 Minutes.
For Classes 6-8: 35 questions and the duration will be of 40 Minutes.
For Classes 9-12: 40 questions and the duration will be of 50 Minutes.

Level 2:- Those who secure Ranks 4–1003 and score 50% or more marks in Level 1 are eligible. For Class 1, students must be rank holders, score 75% or above, and have at least 100 participants from their school. Eligibility is subject to the latest SilverZone guidelines.

Level 3:- 1st rank holders of the International Olympiad from Classes 6th to 12th from 2nd level will be eligible for level 3.

Marking scheme is as below

Class	Section	No. of Questions	Marks/Question	Total Marks
I to II	Science	15	3.5	52.5
	Reasoning and Aptitude	5	4	20
	Scholar’s Zone	5	5.5	27.5
	Grand Total	25	—	100
III to V	Science	20	3	60
	Reasoning and Aptitude	5	3.5	17.5
	Scholar’s Zone	5	4.5	22.5
	Grand Total	30	—	100
VI to VIII	Science	23	2.5	57.5
	Reasoning and Aptitude	7	3	21
	Scholar’s Zone	5	4.3	21.5
	Grand Total	35	—	100
IX to X	Science	25	2	50
	Reasoning and Aptitude	10	3	30
	Scholar’s Zone	5	4	20
	Grand Total	40	—	100
XI to XII	Physics	10	2.5	25
	Chemistry	10	2.5	25
	Reasoning and Aptitude	10	2.5	25
	Biology / Mathematics	10	2.5	25
	Grand Total	40	—	100

Frequently Asked Questions (FAQs)

What is SilverZone iOS?

The SilverZone International Olympiad of Science (iOS) is a nationally and internationally recognized Science Olympiad for students of Classes 1–12. It is designed to strengthen scientific concepts, analytical thinking, logical reasoning, and problem-solving skills. The exam encourages students to go beyond their school curriculum and build a strong foundation for future competitive examinations.

Who Can Participate in SilverZone iOS?

The SilverZone iOS is open to students from Classes 1 to 12 studying in CBSE, ICSE, and State Board schools. Any eligible student can appear for the Level 1 examination through their school and showcase their scientific aptitude at a national and international level.

What is the Syllabus for SilverZone iOS?

The SilverZone iOS syllabus follows the latest CBSE, ICSE, and State Board curriculum for the respective class. The exam assesses students through Science, Reasoning & Aptitude, and Scholar's Zone sections, focusing on conceptual understanding, logical reasoning, and application-based learning.

Is There a Level 2 in SilverZone iOS?

Yes. The SilverZone iOS Level 2 examination is conducted for students who qualify in Level 1. Students securing Ranks 4–1003 with at least 50% marks in Level 1 are eligible to appear for Level 2.

Which science topics require extra attention?

Students should pay extra attention to topics that involve scientific concepts, reasoning, and practical applications. It is also helpful to focus on topics that require calculations, observations, and understanding of real-life science concepts.

How important are diagrams and experiments?

Diagrams and experiments are very important for SOF ISO preparation.. Learning how experiments work and practising labelled diagrams can improve understanding and help students answer application-based questions with confidence.