Disclaimer: Education guidance for students and parents choosing Tamil Nadu Higher Secondary groups. This is civic journalism, not a Directorate of Government Examinations circular or a school prospectus. Group codes, subject combinations, and undergraduate eligibility change — confirm the current offer with the admitting school and official admission notifications before you decide.
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Class XI is the first year of Tamil Nadu Higher Secondary. The four Part III subjects you picked with your group code each have one or more official volumes. Physics, Chemistry, Mathematics and Biology are usually split into two volumes. Commerce, Accountancy and Economics often follow the same split. Computer Science and Computer Applications are also issued as numbered volumes. Part I language and Part II English have their own books; this finder concentrates on the group cores that decide engineering, medicine, commerce and humanities doors.
A general academic student still writes six papers. The group only names the four cores. So a 2502 student should look for Physics, Chemistry, Computer Science and Mathematics — not Biology. A 2503 student swaps Computer Science for Biology. Commerce groups 2702 and 2708 share Accountancy, Commerce and Economics; the fourth book is Computer Applications or Business Mathematics. Humanities 2804 and 2802 share History, Geography and Economics; the fourth book is Political Science or Computer Applications. Always match the school’s printed code before you download a stack of PDFs.
Tamil Nadu textbooks are works of the State Council of Educational Research and Training, printed and sold by the Tamil Nadu Textbook and Educational Services Corporation. This site does not host scans, does not scrape pirate mirrors, and does not keep a local copy under /public. If a historic textbooksonline.tn.nic.in address no longer resolves, we keep the finder and send you to the live Textbook Corporation home page so you can pick the current English or Tamil medium file yourself.
Last checked 12 September 2026: https://www.textbookcorp.in/ returned a working government sales and notice page. The older textbooksonline host did not resolve from our check, and textbookcorp.tn.gov.in presented a TLS error on the authoring machine. Treat any third-party “Samacheer PDF” blog as unofficial. If the official button on a row says verify on official portal, open the Corporation site, choose Class 11, medium, and subject — do not use a random Google file.
Use the class-12 finder when you need second-year volumes. Subject pages (Physics, Chemistry, Mathematics, Biology, Commerce, Computer) keep XI and XII together for revision. Group pages on this desk explain who should pick each code. After Class 12, engineering, medicine, CA and law pages remind you that admission rules live on TNEA, NTA and institute sites — not inside a textbook PDF.
The six-paper structure does not change because you opened a PDF. Language and English remain on the timetable. Use the matching group page to see who should sit this subject, and the after-12th pathway pages to see which official portal (TNEA, NTA, ICAI) publishes eligibility for the year you apply. This finder will never invent a cut-off, never host the book, and never replace the school’s printed volume when the cover year differs. Ask the class teacher if a volume is not listed for your medium. Parents should also confirm whether the school uses English-medium or Tamil-medium books before saving a file, because the two editions are not interchangeable for classroom homework. If the Corporation site is down, wait and retry the official host rather than accepting a forwarded Drive archive. Keep lastChecked in view so you know when we last tried the government link.
Every general academic student still writes Part I language and Part II English. The volumes on this finder are only the Part III cores. Confirm the medium (English or Tamil) with the school, ignore third-party “Samacheer” hosts, and treat lastChecked as a freshness stamp — not a promise that a government URL will stay online forever. If a button 404s next week, keep this page and open the Textbook Corporation home page again.
Official source. Official portal last checked 2026-09-12. Primary index: https://www.textbookcorp.in/. Alternate host to try: https://textbookcorp.tn.gov.in/.
Volumes
Physics — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Physics — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Chemistry — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Chemistry — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Mathematics — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Mathematics — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Business Mathematics & Statistics — Class XI
Class 11 · last checked 2026-09-12
Groups that need this book: 2708
Biology — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Groups that need this book: 2503
Biology — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Groups that need this book: 2503
Accountancy — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Accountancy — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Commerce — Class XI
Class 11 · last checked 2026-09-12
Economics — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Economics — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Computer Science — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Groups that need this book: 2502
Computer Science — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Groups that need this book: 2502
Computer Applications — Class XI Volume I
Class 11 · Volume I · last checked 2026-09-12
Computer Applications — Class XI Volume II
Class 11 · Volume II · last checked 2026-09-12
Related groups
- 2502 — Mathematics + Computer Science
- 2503 — Mathematics + Biology
- 2708 — Commerce + Business Mathematics
- 2702 — Commerce + Computer Applications
- 2804 — Humanities + Political Science
- 2802 — Humanities + Computer Applications
Download how-to: Plus Two textbooks PDF.
Fine print
This page was drafted with AI-assisted tools and human editorial review for mychennaicity.in. AI can miss updates or local nuance — cross-check primary sources and your own documents before decisions. Cross-check group codes with the Tamil Nadu Directorate of Government Examinations and the admitting school. For engineering, medicine and professional courses, use the current TNEA, NTA and institute notifications — not this page alone.