Before looking at how to prepare for TNPSC Group 1 Exam. Let us look at the scheme. TNPSC Examination Scheme: Prelims Mains Interview 1) TNPSC Prelims: Group 1 prelims will have 200 questions. TNPSC Group 1 Prelims Exam Pattern: General Studies – 150 Questions (225 Marks) Aptitude & Mental Ability – 50 Questions (75 Marks) Total – 200 Questions (300 Marks – 3 Hours ) Syllabus: Current Affairs Science: Physics, Chemistry, Botany & Zoology History and Culture of India Indian National Movement Geography Indian Polity Indian Economy Aptitude and Logical Reasoning Books to read for TNPSC Group 1 prelims: Current Affairs: Vision IAS Current Affairs Material. Science: Std 6 to 10 TamilNadu Samacheer Science Books History: Std 6 to 12 TamilNadu Samacheer History Books Geography: Std 6 to 10 TamilNadu Samacheer Geography Books Indian Polity: 'Indian Polity' by Lakshmikant Indian Economy: Std 6 to 12 TamilNadu Samacheer Economy Books Aptitude and Logical Reasoning: Basic Maths Textbooks from Class 8 to 10 for formula-based questions. R.S. Aggarwal book would also help. 2)TNPSC Mains TNPSC Group 1 Mains has three papers. TNPSC Group 1 Mains Exam Pattern: Paper I – 300 Marks (3 Hours) Paper II – 300 Marks (3 Hours) Paper III – 300 Marks (3 Hours) Interview – 120 Marks Total – 1020 Marks TNPSC has not given details about the pattern of each paper. But we can analyse the trend of questions while reading previous year question papers.