For Better Preparation Knowledge of Subject Syllabus & Selection Process is must. So this book will provide you all valid information related to UPSC IFoS Test Pattern & Syllabus. Detailed syllabus of pre mains interviews have been given in this book including all optional subjects. How much you read doesn’t matter. How specific you read matters most. Do little bit more efforts than others. 25 percent extra efforts by you will make you winner. So make extra effort from now. About the EditorWaki