Indian National Junior Science Olympiad
INJSO is the second stage, after the National Standard Examination in Junior Science (NSEJS), in selecting the Indian team for the International Junior Science Olympiad (IJSO) for students up to Class X. HBCSE and IAPT conducted it jointly up to 2023, and HBCSE's 2026-27 notice says NSEJS and INJSO are now conducted entirely by IAPT (jso.indapt.org.in). HBCSE hosts the INJSO papers from 2009 to 2023.
Stage II theory examination of the National Olympiad Programme
Summarised from the official notification. Patterns change; confirm in the latest notice.
| Section | QsQuestions | Marks | Time |
|---|---|---|---|
| Section Isingle correct; 3 marks, −1 for wrong | 15 | — | — |
| Section II5 marks each; one or more correct; no negative marking | 9 | — | — |
| Section IIIlong answer; method weighted | 11 | — | — |
| Total | 180 | 3 hours |
INJSO 2023 question paper (instructions on the official paper) · official source
PYQSathi lists 35 INJSO papers from 2009 to 2023, each linked to its official source. Open the paper library above and pick a year.
INJSO is conducted by the Indian Association of Physics Teachers (IAPT); papers up to 2023 published by HBCSE (TIFR). Notifications, dates and results are published on its official website.
No. PYQSathi is independent. We summarise official documents and link to them, last checked 12 Oct 2026. Always confirm on the official website before applying.
Last verified 12 Oct 2026. Spotted something out of date? Tell us.
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