This book contains General Knowledge, Geography, Indian History, Indian Polity, Life Science and Indian Economy. The contents of this book are highly useful for UPSC Engineering services Examination, Various Public Sector Examinations such as NTPC,NHPC, BPCL, BSNL, DMRC, HAL, IOCL, SAIL, NPCL, DRDO etc. Contents of this book include theory matter & solved practice questions.