NSO Class 4 Sample Paper 2025 - Free Science PDF

The Science Olympiad Foundation has been around for a while, and it’s no surprise that thousands of students join in every year. The National Science Olympiad is a great way for students to brush up on their Science while enjoying a bit of a challenge. If your child is in Class 4, you’ll find a Level 1 sample paper PDF on this page, it gives a good feel for the kind of questions they might see. Looking through it can really help them feel more ready and less nervous when the real thing comes around.

You may also checkout the NSO Level 2 Exam Sample Paper for Class 4

SOF NSO Exam Dates 2025-26 for Class 4 (Level 1)

The National Science Olympiad (NSO) will take place on three separate days during the school year 2025-26. Schools may choose any of the following dates according to their convenience:

Check SOF NSO Exam Dates for Class 4

Note: Each school is allowed to select only one of the available dates, and a separate question paper will be provided for each date. This flexibility allows schools to plan and conduct the exam in a way that best fits their academic calendar.

SOF NSO Syllabus 2025-26 for Class 4 (Level 1)

Is your child excited to take part in this year’s SOF? The Class 4 syllabus is designed to match their learning level while keeping Science fun and interesting. It’s a great way to stay focused and boost confidence without adding extra pressure.

Want to know what's in the exam and how it's structured?

View the full syllabus and exam pattern for Class 4

SOF NSO Answer Key for Class 4 (Level 1)

SOF intends to post the Class 4 NSO answer key in PDF format on its official website shortly after the exam is concluded. The solution keys for all three sets will be released individually. The NSO Class 4 answer key includes correct answers to all exam questions, allowing applicants to predict their expected scores before the official results are released.

View the Answer Key for Class 4

SOF NSO Results 2025-26 for Class 4 (Level 1)

SOF NSO results for Classes 1 to 12 are typically available within 8 weeks of the exam. Students can view their scores on the official SOF website or at their local school.

See the SOF NSO Results 2025-26 for Class 4