The subject matter of this book is comprehensive and exam oriented. Even an average student will find no difficulty in understanding the topics. The questions have been arranged and framed with chapterwise direction. The author has also tried to present this book in new style and compiled the previous questions of fifteen years of UGC NET, PCS, Different University Degree Examination and Other Competitive Examinations. It will also help the students to understand the topics easily and also help them to qualify in the above competitive examinations.