Directorate of Government Examinations, Tamil Nadu Releases TN 11th Book 2023 for the Students. Tamil Nadu Class 11th Book 2023 Includes the Important Topics, Exam Pattern and Marks Distribution of all the Subjects. TN +1 Textbook 2023 Directorate of Government Examinations, Tamil Nadu Releases TN 11th Book 2023 for the Students. Tamil Nadu Class 11th Book 2023 Includes the Important Topics, Exam Pattern and Marks Distribution of all the Subjects.