The Civil Services Aptitude Test (CSAT) is conducted by the Union Public Service Commission (UPSC) to find competent civil servants who would help the country to grow. The changing nature of the General Studies Paper 1 requires not just memorization of facts but also conceptual understanding and in-depth knowledge. The present book has been designed especially for the aspirants who have been preparing for CSAT General StudiesPaper 1 Examination. The book has been divided into 11 chapters namely Indian History, Art & Culture, Geography, Environment & Ecology, Indian Polity, Indian Economy, Physics, Chemistry, Biology, Science & Technology and Miscellaneous, each containing ample number of previous years??? questions asked in the General Studies Paper 1 Examination. This book contains 16 Years??? solved papers of General Studies Paper 1 with last two years (2015 & 2016) Solved Papers of Civil Services Preliminary Examination Paper 1 with detailed explanations for each question. The questions asked in previous years??? examinations will help aspirants get an insight into the trends and pattern of questions asked in Civil Services Preliminary Examination. Large collection of previous years??? questions has been provided Chapterwise for wide coverage of General Studies Paper 1. Also questions from last 16 years??? IAS (Pre) General Studies examinationshave been covered in this book.