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    SOF ISO Sample Question Paper 2026-27 with Answers: Class 1 to 12 PDF

    SOF ISO Sample Question Paper 2026-27 with Answers: Class 1 to 12 PDF

    Priyanka DasguptaUpdated on 17 Sep 2026, 03:41 PM IST

    The Science Olympiad Foundation (SOF) conducts the International Science Olympiad (ISO), previously known as the National Science Olympiad (NSO). The SOF ISO sample question paper 2026-27 with answers has been released online. Students preparing for the ISO exam can download the class-wise ISO sample papers 2026-27 from the official website at sofworld.org.

    This Story also Contains

    1. SOF ISO 2026-27 Highlights
    2. Download ISO Sample Paper 2026-27 PDF with Answers
    3. How to Download ISO Sample Question Papers 2026-27?
    4. ISO Sample Questions and Answers 2026-27
    SOF ISO Sample Question Paper 2026-27 with Answers: Class 1 to 12 PDF
    SOF ISO Sample Question Paper 2026-27 with Answers: Class 1 to 12 PDF

    Students can solve the ISO sample question papers 2026-27 to understand the exam pattern, types of questions, and marking scheme. This year, the Level 1 ISO 2026-27 will be conducted in three sets: Set A on October 30, 2026, Set B on November 19, 2026, and Set C on December 3, 2026. Read more to get details on the SOF ISO 2026-27 sample question papers and answers.

    SOF ISO 2026-27 Highlights

    Students can go through the related details of the SOF ISO exam 2026-27 before downloading the sample papers.

    Particulars

    Details

    Exam name

    International Science Olympiad (ISO) (also known as NSO)

    Conducted by

    Science Olympiad Foundation (SOF)

    Classes

    Classes 1 to 12

    SOF ISO exam date 2026-27

    • Level 1 for Classes 1 to 12:


      • Set A - October 30, 2026

      • Set B - November 19, 2026

      • Set C - December 3, 2026

    • Level 2 for Classes 3 to 12: To be announced

    Mode of examination

    Offline

    Medium of the examination

    English

    Duration

    1 hour

    Official website

    sofworld.org


    Also check: ISO Syllabus 2026-27

    Download ISO Sample Paper 2026-27 PDF with Answers

    Students can click on the download links mentioned below to download the class-wise ISO sample papers 2026-27 PDFs with answers.


    Class



    Download Links

    SOF ISO Class 1 sample paper 2026-27

    Available Here

    SOF ISO Class 2 sample paper 2026-27

    Available Here

    SOF ISO Class 3 sample paper 2026-27

    Available Here

    SOF ISO Class 4 sample paper 2026-27

    Available Here

    SOF ISO Class 5 sample paper 2026-27

    Available Here

    SOF ISO Class 6 sample paper 2026-27

    Available Here

    SOF ISO Class 7 sample paper 2026-27

    Available Here

    SOF ISO Class 8 sample paper 2026-27

    Available Here

    SOF ISO Class 9 sample paper 2026-27

    Available Here

    SOF ISO Class 10 sample paper 2026-27

    Available Here

    SOF ISO Class 11 sample paper 2026-27

    Available Soon

    SOF ISO Class 12 sample paper 2026-27

    Available Here

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    How to Download ISO Sample Question Papers 2026-27?

    To download the ISO sample question papers 2026-27 for each class, students can follow the steps mentioned below.

    • Visit the official website at sofworld.org.

    • On the homepage, check the menu bar and click on the ‘SOF ISO’ option.

    • A drop-down menu will appear on the screen.

    • Select ‘Sample Model Papers’ from the options and open the page as shown below.

    1789639719077

    • The list of class-wise sample papers will appear on the screen.

    • Click on the links and download the SOF ISO sample paper for 2026-27.

    ISO Sample Questions and Answers 2026-27

    Below, we have provided a few sample questions and answers for the ISO 2026-27 examination. These questions are available in the PDFs provided on the website as well.


    ISO Class 1 Sample Question & Answer

    1789639719150

    Answer: (B) 4


    ISO Class 2 Sample Question & Answer

    1789639719221

    Answer: (B) Anu


    ISO Class 3 Sample Question & Answer

    1789639719292

    Answer: (A) 22


    ISO Class 4 Sample Question & Answer

    1789639719361

    Answer: (C) Dodder


    ISO Class 5 Sample Question & Answer

    1789639719428

    Answer: (A) Beriberi


    ISO Class 6 Sample Question & Answer

    1789639719504

    Answer: (D)




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