First of its kind book preparatory on Olympiad in many ways. The book is aimed at achieving not only success but deep rooted learning in children. The book provides complete theory with Illustrations to master the concepts and to apply them in questions and real-life. There is an exhaustive range of thought provoking questions in MCQ format to test the student’s knowledge thoroughly. The questions are designed so as to test the knowledge, comprehension, evaluation, analytical and application skills. Solutions and explanations are provided for all questions. The questions are divided into two levels. Detailed solutions are provided for each question. The book also contains past questions of various Olympiad exams. The book also includes 5 Online Mock Olympiad Tests designed on the pattern of various prominent national Olympiad exams conducted across the various schools in India.