International Olympiad of Science (iOS): Important Dates, Exam Syllabus, Preparation Tips

  • ACIO
  • November 29, 2023
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The International Olympiad of Sciences (iOS) is a yearly exam organised by the SilverZone Foundation. It’s all about checking how well students understand and are good at Science. It’s open for students studying Science in school, both in India and worldwide. Taking part in iOS allows students to see how they measure up internationally.

iOS syllabus is based on the topics taught in schools, whether by CBSE, ICSE, or State Boards. It helps students get good at Science. The competition isn’t just about winning; it’s also about building a strong foundation in Science. This helps students think smart, solve problems, and know a lot about Science, which will be helpful in their future studies and jobs.

One of the big bonuses of joining the International Olympiad of Science (iOS) is the special report you get after the test. This report tells you exactly where you’re doing great and where you could get even better. It’s like a roadmap to becoming awesome at Science! It helps students see what they’re good at and where to improve. Overall, the International Olympiad of Science boosts young science enthusiasts, giving them the skills and knowledge they need to do well in school and beyond.

International Olympiad of Science iOS 2023 | Exam Highlights:

Exam Name International Olympiad of Science (iOS)
Last Date of Registration 15th October 2023
Exam Date 21-11-2023
15-12-2023
Mode of Exam Online
Medium of Exam English
Level of Exam Intermediate
Duration of Exam 40 minutes
Type of Questions MCQs (Multiple Choice Questions)
Negative Marking No Negative Marking
Conducting Body SilverZone Foundation

iOS 2023 Eligibility Criteria:

Level 1

  • All students from 1st to 12th grade can participate in Level 1.

Level 2

  • The top 1000 students who ranked between 4th and 1003rd place, with at least 50% marks or more.
  • For Class 1, the student who got the 1st rank with at least 75% marks and 100 other students from the same school in that subject can move to Level 2.

Level 3

  • Those who got the 1st rank in the International Olympiad from classes 6th to 12th in Level 2 can advance to Level 3.

iOS 2023 Application Form | How to Apply?

  • Go to the iOS 2023 Registration Portal.
  • Use School Code to access your school’s registration.
  • Provide your school information and basic details in the registration form.
  • Choose the Olympiad Exam you want to participate in, the International Olympiad of Science (iOS).
  • Agree to the Terms & Conditions.
  • Double-check your registration details before proceeding with the payment.
  • Make the registration fee payment of 10 USD securely online.

iOS 2023 Syllabus & Exam Pattern:

The preliminary chapter-wise marking plan can assist students in improving their performance in SilverZone Olympiads. However, please note that the final marking distribution may vary based on the choices made by the people who create the test papers.

iOS 2023 Class 1:

Unit Chapter No. of Question Marks Total Marks
Living & Non-Living Things Living & Non-Living Things 2 3.5 7
Plants and Animals Plants; Animals 5 3.5 17.5
Food and Clothes Food we eat; Clothes we wear 2 3.5 7
Our Environment Air; Water & its Resources 2 3.5 7
Our Surroundings Our Family & Neighbourhood Safety Rules 2 3.5 7
Human Body Human Body 2 3.5 7
Reasoning and Aptitude Reasoning and Aptitude 5 4 20
Scholar’s Zone Scholar’s Zone 5 5.5 27.5
Total: 25 100

iOS 2023 Class 2:

Unit Chapter No. of Question Marks Total Marks
Living & Non-Living Things Living & Non-Living Things 2 3.5 7
Plants and Animals Plants; Animals 4 3.5 14
Food and Clothes Food we eat; Clothes we wear 3 3.5 10.5
Our Environment Air; Water & its Resources 2 3.5 7
Our Surroundings Our Family & Neighbourhood Safety Rules 2 3.5 7
Human Body Human Body 2 3.5 7
Reasoning and Aptitude Reasoning and Aptitude 5 4 20
Scholar’s Zone Scholar’s Zone 5 5.5 27.5
Total: 25 100

iOS 2023 Class 3:

Unit Chapter No. of Question Marks Total Marks
Living & Non-Living Things Living & Non-Living Things 2 3 6
Plants and Animals Plant Kingdom 6 3 18
Animal Kingdom
Matter, Motion and Transport Matter and Motion 4 3 12
Transport
Communication and Safety Rules
Environment and Universe Our Environment, Air, Water and Weather, Our Universe 5 3 15
Our Body Our Body 3 3 9
Reasoning and Aptitude Reasoning and Aptitude 5 3.5 17.5
Scholar’s Zone Scholar’s Zone 5 4.5 22.5
Total: 30 100

iOS 2023 Class 4:

Unit Chapter No. of Question Marks Total Marks
Human Body Functioning of Human Body 3 3 9
Rocks and Soil Rocks 2 3 6
Minerals and Soil
Environment and Universe Our Environment 4 3 12
Universe
Plants and Animals Plant Kingdom 6 3 18
Animal Kingdom
Work, Force and Energy Work, Force and Energy 3 3 9
Matter Matter 2 3 6
Reasoning and Aptitude Reasoning and Aptitude 5 3.5 27.5
Scholar’s Zone Scholar’s Zone 5 4.5 22.5
Total: 30 100

iOS 2023 Class 5:

Unit Chapter No. of Question Marks Total Marks
Matter Matter 2 3 6
Environment and Natural Calamities Our Environment 4 3 12
Natural Calamities
Housing
Plants and Animals Plants 6 3 18
Animals
Light and Sound Light and Sound 2 3 6
Our Body and Nutrition Our Body and Nutrition 3 3 9
Work and Energy Work, Force, Energy and Simple Machines 3 3 9
Reasoning and Aptitude Reasoning and Aptitude 5 3.5 17.5
Scholar’s Zone Scholar’s Zone 54.5 22.5
Total: 30 100

iOS 2023 Class 6:

Unit Chapter No. of Question Marks Total Marks
Food Components of Food 2 2.5 5
Materials Sorting Materials into Groups 4 2.5 10
Living World Body Movements 6 2.5 15
Getting to Know Plants
The Living Organisms-Characteristics and Habits
Motion and Measurement Motion and Measurement of distances 2 2.5 5
How Things Works Electricity and Circuits 7 2.5 17.5
Fun and Magnets
Light
Air Air Around Us 2 2.5 5
Reasoning and Aptitude Reasoning and Aptitude 7 3 21
Scholar’s Zone Scholar’s Zone 5 4.3 21.5
Total: 30 100

iOS 2023 Class 7:

Unit Chapter No. of Question Marks Total Marks
How Stuff Works Light 6 2.5 15
Electric Current and its Effects
Living World Respiration 6 2.5 15
Transportation in Plants and Animals
Reproduction in Plants
Materials Heat 6 2.5 15
Acid, Bases and Salts
Physical and Chemical Changes
Natural Resources Wastewater Story 2 2.5 5
Forest
Food Nutrition in Plants 3 2.5 7.5
Nutrition in Animals
Reasoning and Aptitude Reasoning and Aptitude 7 3 21
Scholar’s Zone Scholar’s Zone 5 4.3 21.5
Total: 35 100

iOS 2023 Class 8:

Unit Chapter No. of Question Marks Total Marks
Food Crop Production 4 2.5 10
Microorganism
How Stuff Works Force and Pressure 8 2.5 20
Friction
Light
Sound
Chemical Effects of Electric Current
Living World Reproduction in Animals 6 2.5 15
Reaching the Age of Adolescence
Conservation of Plants and Animals
Materials Coal and Petroleum 3 2.5 7.5
Combustion and Flame
Natural Phenomena Some Natural Phenomena 2 2.5 5
Reasoning and Aptitude Reasoning and Aptitude 7 3 21
Scholar’s Zone Scholar’s Zone 5 4.3 21.5
Total: 35 100

iOS 2023 Class 9:

Unit Chapter No. of Question Marks Total Marks
Matter Matter in Our Surroundings 3 2 6
Is Matter Around Us Pure
Atoms & Molecules Atoms and Molecules 5 2 10
 Structure of Atom
Living World Cell 5 2 10
Tissues
Food Improvement in Food Resources 2 2 4
Force & Motion Motion 6 2 12
Force and Laws of Motion
Work & Energy Work and Energy 4 2 8
Sound
Reasoning and Aptitude Reasoning and Aptitude 10 3 30
Scholar’s Zone Scholar’s Zone 5 4 20
Total: 40 100

iOS 2023 Class 10:

Unit Chapter No. of Question Marks Total Marks
Chemical Elements and Their Properties Chemical Reactions and Equations 8 2 16
Acids, Bases and Salts
Metals and Non-Metals
Carbon and Its Compound
Life Processes Life Processes 6 2 12
Control and Coordination
Reproduction
Heredity and Evolution Heredity 2 2 4
Light and Electricity Reflection of Light 8 2 16
Refraction of Light
Human Eye
Electricity
Magnetic Effect of Electric Current
Environment Environment 1 2 2
Reasoning and Aptitude Reasoning and Aptitude 10 3 30
Scholar’s Zone Scholar’s Zone 5 4 20
Total: 40 100

iOS 2023 Class 11 (PCB):

Subject Chapter No. of Question Marks Total Marks
Physics Unit and measurement 10 2.5 25
Kinematics
Laws of Motion
Work, Energy and Power
Motion of System of Particles and Rigid Body
Gravitation
Properties of Bulk Matter
Thermodynamics
Behaviour of Perfect Gases and Kinetic Theory
Oscillations and Waves
Chemistry Some Basic Concepts of Chemistry 10 2.5 25
Structure of Atom
Classification of Elements and Periodicity in Properties
 Chemical Bonding and Molecular Structure
Thermodynamics
Equilibrium
Redox Reactions
Organic Chemistry – Some Basic Principles and Techniques
Hydrocarbons
Reasoning and Aptitude Reasoning and Aptitude 10 2.5 25
Biology Diversity in the Living World 10 2.5 25
Structural Organisation in Plants and Animals
Total: 40 100

iOS 2023 Class 11 (PCM):

Subject Chapter No. of Question Marks Total Marks
Physics Unit and Measurement 10 2.5 25
Kinematics
Laws of Motion
Work, Energy and Power
Motion of System of
Particles and Rigid Body
Gravitation
Properties of Bulk Matter
Thermodynamics
Behaviour of Perfect
Gases and Kinetic Theory
Oscillations and Waves
Chemistry Some Basic Concepts of Chemistry 10 2.5 25
Structure of Atom
Classification of Elements and Periodicity in Properties
Chemical Bonding and Molecular Structure
Equilibrium
Redox Reactions
Organic Chemistry – Some Basic Principles and Techniques
Hydrocarbons
Mathematics Sets and Function 10 2.5 25
Algebra
Coordinate Geometry
Calculus
Statistics and Probability
Reasoning and Aptitude Reasoning and Aptitude 10 2.5 25
Total: 40 100

iOS 2023 Class 12 (PCB):

Subject Chapter No. of Question Marks Total Marks
Physics Electrostatics 10 2.5 25
Current Electricity
Magnetic Effects of Current and Magnetism
Electromagnetic Induction and Alternating Currents
Electromagnetic Waves
Optics
Dual Nature of Matter and Radiation
Atoms and Nuclei
Electronic Devices
Chemistry Solutions 10 2.5 25
Electrochemistry
Chemical Kinetics
The d and f Block Elements
Coordination Compounds
Organic Compounds Containing Halogens (Haloalkanes and Haloarenes)
Organic Compounds Containing Oxygen (Alcohols, Phenols, Ethers, Aldehydes, Ketones and Carboxylic Acids)
Organic Compounds Containing Nitrogen (Amines)
Biomolecules
Reasoning and Aptitude Reasoning and Aptitude 10 2.5 25
Biology Reproduction 10 2.5 25
Genetics and Evolution
Biology and Human Welfare
Biotechnology
Ecology
Total: 40 100

iOS 202 Class 12 (PCM):

Subject Chapter No. of Question Marks Total Marks
Physics Electrostatics 10 2.5 25
Current Electricity
Magnetic Effects of Current and Magnetism
Electromagnetic Induction and Alternating Currents
Electromagnetic Waves
Optics
Dual Nature of Matter and Radiation
Atoms and Nuclei
Electronic Devices
Chemistry Solutions 10 2.5 25
Electrochemistry
Chemical Kinetics
The d and f Block Elements
Coordination Compounds
Organic Compounds Containing Halogens (Haloalkanes and Haloarenes)
Organic Compounds Containing Oxygen (Alcohols, Phenols, Ethers, Aldehydes, Ketones and Carboxylic Acids)
Organic Compounds Containing Nitrogen (Amines)
Biomolecules
Mathematics Relation and Function 10 2.5 25
Algebra
Calculus
Vectors and Three-Dimensional Geometry
Linear Programming
Probability
Reasoning and Aptitude Reasoning and Aptitude 10 2.5 25
Total: 40 100

iOS 2023 Test Duration:

The exam will be in English only and it’s for students from 1st to 12th grade. Here’s what to expect:

  • For Classes 1-2: There will be 25 questions and you’ll have 40 minutes.
  • For Classes 3-5: There will be 30 questions and you’ll also have 40 minutes.
  • For Classes 6-8: There will be 35 questions and you’ll have 40 minutes as well.
  • For Classes 9-12: There will be 40 questions and you’ll get 50 minutes.

You’ll get all the specific instructions along with the question papers. Starting from 3rd grade, you’ll get OMR answer sheets to mark your answers.

The questions will have multiple-choice answers. Don’t worry about wrong answers – there’s no penalty for guessing!

iOS 2023 Rankings & Rewards:

iOS 2023 Level 3 Rewards:

Educational excursion abroad for Math & Science Olympiad: NASA (USA)

Selected Top two students from each subject.

iOS 2023 Level 2 Rewards:

Ranks Rewards
Rank 1 1 Olympiad rank Holders will be awarded with cash prize of
 Class 12:- Rs. 50,000/-
 Class 11:- Rs. 25,000/-
 Class 1 to 10:- Rs. 10,000/-
Rank 2 2 Olympiad Rank Holders in each will be awarded with cash prize of
 Class 11 & 12:- Rs. 10,000/-
 Class 1 to 10:- Rs. 7,500/-
Rank 3 3 Olympiad Rank Holders in each will be awarded with cash prize of
 Class 11 & 12:- Rs. 7,500/-
 Class 1 to 10:- Rs. 5,000/-

iOS 2023 Level 1 Rewards:

Ranks Rewards
Rank 4 to 10 Rank holders from each class 1st to 12th will be awarded with Gift Certificate of different value.
Rank 11 to 25 Rank holders from each class 1st to 12th will be awarded with Gift Certificate of different value.
Rank 26 to 500 Rank holders from each class 1st to 12th will be awarded with Topper Achievement Certificate
  • Prizes for Level 1 and Level 2 will be given out based on the results of Level 1 and interviews, whether they are in person or through audio or video.
  • If there are up to 10 students with the same rank, they will share the prize money equally. Each winner will also receive a Gold Medal of Excellence and a Certificate in their category.
  • If 11 or more students have the same rank, instead of cash, each winner will receive a Medal of Excellence and a Certificate in their category.

iOS 2023 Preparation Tips | How to Prepare for Exam?

To do great in the Olympiad exams, here are some tips for students to follow:

  • Start your preparations early, make a plan, and then put it into action.
  • Join in weekly and monthly Olympiads to get used to the exam format.
  • Make sure you read the syllabus carefully.
  • Set daily goals and stick to them. Being consistent is really important.
  • Understand the whole syllabus well so you can start preparing early.
  • Do revisions and attempt practice tests.
  • Solve sample papers from previous years.

For the most recent updates and registration, visit the official website. Keep learning and keep shining!

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