Indian National Chemistry Olympiad
INChO is the second stage of the National Olympiad Programme in Chemistry organised by HBCSE (TIFR) in early each year; students qualify for it through the National Standard Examination in Chemistry (NSEC) conducted by the Indian Association of Physics Teachers (IAPT) in November. Top performers are invited to the Orientation-cum-Selection Camp (OCSC), which selects the Indian team for the International Chemistry Olympiad (IChO). For 2027 the INChO is scheduled for 30 January 2027.
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 |
|---|---|---|---|
| Problem 1 | — | 23 | — |
| Problem 2 | — | 25 | — |
| Problem 3 | — | 21 | — |
| Problem 4 | — | 24 | — |
| Problem 5 | — | 16 | — |
| Total | 5 | 109 | 3 hours |
INChO 2025 theory question paper (marks printed on the official paper) · official source
PYQSathi lists 42 INChO papers from 2008 to 2025, each linked to its official source. Open the paper library above and pick a year.
INChO is conducted by the Homi Bhabha Centre for Science Education (HBCSE), Tata Institute of Fundamental Research. 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 Spotted something out of date?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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