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Science Olympiad preparation for Class 5 means learning the SOF syllabus—Logical Reasoning, Science and an Achievers Section—practising 50 MCQs in 60 minutes on an OMR sheet, and revising Class 4 topics too. Forty per cent of Level 1 questions come from the previous class, so start 6 to 8 weeks early.
This guide by the V&S Editorial Team covers the 2026–27 dates, exact pattern, syllabus, week-by-week plan, sample questions and choosing a practice book. Browse the V&S Olympiad books and exam page to see the wider range of titles.
What is the National Science Olympiad for Class 5?
The National Science Olympiad (NSO) is a yearly science exam for students of Classes 1 to 12, conducted by the Science Olympiad Foundation (SOF). It tests science knowledge, logical reasoning and higher-order thinking through multiple-choice questions.
SOF’s current website presents this exam as the International Science Olympiad (ISO), while schools, parents and most books still say NSO. It is the same exam, and the Class 5 pattern is the same under both names. Level 1 is open to Classes 1 to 12. Level 2 is for Classes 3 to 12 students who qualify from Level 1; published cut-off reports describe this as roughly the top 5% class-wise.
When is the Class 5 exam in 2026–27?
SOF has announced three Level 1 dates for the 2026–27 session. A school chooses one, and every student in that school writes on the same date. Registration normally goes through the school’s Olympiad coordinator.
| Level 1 date | Day set |
|---|---|
| 30 October 2026 | Date one |
| 19 November 2026 | Date two |
| 3 December 2026 | Date three |
Confirm the school’s chosen date on the official SOF exam dates page. Level 2 dates are announced separately.
What is the NSO exam pattern for Class 5?
Level 1 has 50 multiple-choice questions, 60 marks and a one-hour time limit. There is no negative marking.
| Section | Questions | Marks per question | Total marks |
|---|---|---|---|
| Logical Reasoning | 10 | 1 | 10 |
| Science | 35 | 1 | 35 |
| Achievers Section | 5 | 3 | 15 |
| Total | 50 | 60 |
The Achievers Section holds only 5 questions but carries 15 of 60 marks—25% of the paper. In Level 2, Class 5 has 45 Science questions of 1 mark and 5 Achievers questions of 3 marks; there is no separate Logical Reasoning section.
What is in the Class 5 NSO syllabus?
SOF’s current Class 5 syllabus has three parts.
Patterns; Analogy and Classification; Geometrical Shapes; Mirror and Water Images; Direction Sense; Ranking; Alphabet Test; Logical Sequence of Words; Puzzle Test; Coding and Decoding; Clock and Calendar.
Animals; Human Body and Health; Plants; Natural Resources and Indian Heritage; Pollution and Calamities; Earth and Universe; Matter and Materials; Force and Energy.
Higher Order Thinking Questions (HOTS) based on the Section 2 Science topics.
Important: In Level 1, 60% of questions come from the current class syllabus and 40% from the previous class. A Class 5 child should revise Class 4 topics too. Level 2 and the Achievers Section use the current class syllabus only.
How many weeks do you need?
Six to eight weeks of steady work, around 45 to 60 minutes on school days, is a sensible target. Short, regular sessions beat long weekend marathons. Add 15 minutes of Logical Reasoning every day from week 1.
| Week | Focus |
|---|---|
| 1 | Read the SOF syllabus, revise Class 4 topics and attempt one untimed sample paper. |
| 2 | Plants and Animals. |
| 3 | Human Body and Health; Natural Resources and Indian Heritage. |
| 4 | Pollution and Calamities; Earth and Universe. |
| 5 | Matter and Materials; Force and Energy. |
| 6 | Achievers questions and descriptive answer writing. |
| 7 | Two full timed OMR papers and a review of every mistake. |
| 8 | Revise the mistake list, light practice and early bedtimes. |
How should a Class 5 child learn science?
Use a four-step loop: read the topic, close the book and explain it aloud simply, draw a quick labelled diagram, then answer five MCQs. If a child cannot explain it aloud, the concept is not yet secure.
School textbooks are the natural first read; NCERT publishes books free on the NCERT website. Treat the SOF syllabus list as the reference and textbooks as support. For hands-on practice, the 101+10 New Science Games activity book offers experiments and working models for ages 8 to 15.
How do you handle Logical Reasoning and Achievers?
Practise one reasoning type per day: direction sense on Monday, coding on Tuesday, calendar on Wednesday, and so on. Keep a small notebook of the tricks that worked. For Achievers questions, underline what is given, write down what is being asked, and eliminate options that break a basic science rule. Memorised answers will not help.
Sample questions with solutions
These original practice questions were written by the V&S Editorial Team in the style of the Class 5 syllabus. They are not taken from any SOF paper.
Logical Reasoning
- Meera walks 4 m north, turns right and walks 3 m, then turns right again and walks 4 m. Where is she now? (A) 3 m west (B) 3 m east (C) 4 m south (D) 7 m east
Answer: B. She returns to the starting line after walking south 4 m, so she is 3 m east of where she began.
- If CAT is written as DBU, how is DOG written? (A) EPH (B) ENH (C) DPH (D) EPG
Answer: A. Each letter moves one place forward: D→E, O→P and G→H.
- If the 5th falls on a Monday, which day is the 19th? (A) Sunday (B) Monday (C) Tuesday (D) Saturday
Answer: B. The 19th is 14 days later—exactly two weeks—so the weekday repeats.
Science and Achievers
- Which change can be reversed? (A) Burning a candle (B) Melting ice (C) Cooking an egg (D) Rusting iron
Answer: B. Melted water can be frozen back into ice.
- Which is renewable? (A) Coal (B) Petroleum (C) Wind (D) Natural gas
Answer: C. Wind is naturally replenished; fossil fuels take millions of years to form.
- A watered plant is kept in darkness for ten days. Its new leaves turn pale. What stopped, and what was missing? (A) Respiration/oxygen (B) Photosynthesis/sunlight (C) Digestion/water (D) Pollination/insects
Answer: B. Photosynthesis needs sunlight. Without it, the plant cannot make enough food.
Why does OMR sheet practice matter?
An OMR sheet is read by a scanner, so a half-filled bubble can cost marks. Rehearse at home with OMR-style sheets:
- Darken one circle fully and never mark two options.
- Stay inside the circle and keep the sheet clean.
- Check the question number against the row each time.
- Follow the day’s instruction about pencil or ball pen.
- Leave no question blank because there is no negative marking.
How should you use sample papers and mock tests?
Treat every paper as a diagnosis tool, not a score to be proud of. SOF publishes Class 5 sample papers. After each paper, create an error log with the question number, why it went wrong, and the topic to revise.
| Part | Suggested minutes |
|---|---|
| Logical Reasoning (10 questions) | 10 |
| Science (35 questions) | 30 |
| Achievers Section (5 questions) | 15 |
| Final OMR check | 5 |
Inside V&S National Science Olympiad Class 5
V&S Publishers has been in business since 1940. Its National Science Olympiad Class 5 guide is built as a complete practice package.
| Title | National Science Olympiad, Class 5 (With OMR Sheets) |
|---|---|
| Subtitle | Theories with examples, MCQs & solutions, Previous questions, Model test papers |
| Publisher | V&S Publishers |
| Language | English |
| Binding / Print | Paperback / Black and white |
| Pages | 200 |
| Age group | 9 to 12 years |
| MRP | ₹250 (USD 15) |
| ISBN | 9789357940443 |
The book has five sections: Science, Logical Reasoning, Achievers, Subjective and Model Papers. Chapters end with MCQs and detailed solutions. It includes a CD with a study chart, tips and tricks, the exam pattern and links to previous years’ papers.
How to use it: Read Science chapters in weeks 2–5, use Logical Reasoning in the daily 15 minutes, move to Achievers and Subjective in week 6, and reserve the model papers and OMR sheets for weeks 7–8.
Two honest limits: Compare the contents with the current SOF syllabus and fill any gap from SOF’s own pages. The exam itself is entirely MCQ, so use the Subjective section to deepen understanding, not as an exam-format replacement.
How do you choose an Olympiad book?
| What to check | Why it matters |
|---|---|
| Matches the current SOF syllabus | Missing topics mean missed marks. |
| Concepts before questions | Builds understanding, not guesswork. |
| Solutions explain the reasoning | Lets a child learn from errors. |
| Real Achievers practice | These questions carry 25% of the marks. |
| OMR sheets and full mocks | Builds exam-day confidence. |
| Clear diagrams and simple language | Keeps a 10-year-old reading. |
How can parents help without pressure?
Keep sessions short and calm, praise effort rather than rank, and let the child teach you a topic once a week. Children aged 6 to 12 need 9 to 12 hours of sleep per 24 hours, so protect bedtime—especially in the final week. The V&S guide on brain power and focus has more age-appropriate study habits.
Frequently Asked Questions
Is NSO the same as ISO?
Yes in practice. SOF’s current website calls the exam ISO, while NSO remains the name most schools, books and parents use. The Class 5 pattern is the same.
How many questions and marks are in NSO Class 5?
Level 1 has 50 MCQs for 60 marks in one hour: 10 Logical Reasoning, 35 Science and 5 Achievers questions worth 3 marks each.
Is there negative marking?
No. Students should attempt every question rather than leave answers blank.
Is the exam only multiple choice?
Yes. Every question is an MCQ. Subjective practice helps understanding but does not appear in the paper.
Who can write Level 2?
Classes 3 to 12 can write Level 2 if they qualify from Level 1.
How many hours should a Class 5 child study?
Plan 45 to 60 minutes on school days for six to eight weeks, plus 15 minutes of daily Logical Reasoning.
Does the V&S book include OMR sheets?
Yes. The National Science Olympiad Class 5 guide includes OMR sheets and two model test papers.
Where can I buy it?
V&S titles are available through bookstores, school networks and online platforms such as Amazon and Flipkart.
Is there another Olympiad for extra practice?
V&S runs the National Olympiad Examination (VSNOE), a separate offline OMR-based MCQ exam for Classes 1 to 12.
When should preparation start?
Six to eight weeks before the school’s exam date is comfortable. If the date is close, focus on the syllabus list, Class 4 revision and two timed OMR papers.
Final thoughts
A good Science Olympiad result comes from understanding the pattern, covering Class 5 and Class 4 topics, and practising under real OMR conditions. Start with the SOF syllabus, follow a short daily routine, test with timed papers, and choose a book that explains its solutions clearly. For more study guides, visit the V&S Publishers blog.