Samacheer Kalvi 12th Books PDF: The Tamil Nadu State Board's class 12th std books 2023 are available in PDF format for free download. The Tamil Nadu 12th Standard new and old syllabus book is available for all subjects as PDFs in English and Tamil. 12th Books are more than enough for taking 95–100 marks in the TNPSC exam. Samacheer Kalvi 12th Books are free to download in PDF, English, ...