This book is most effective after initial learning. A student can revise the subject a number of times before the exam in a very short time. With the excuse of making the books more concise, the theory is usually presented in bullet points only. However, in this book, suitable narrations, example and explanation assisted by charts and diagrams are given to help you revise theory effectively. This makes it easier to remember what you learn. The formats, formulas and carefully handpicked revision problems to assist the students are part of this book to make this a complete revision kit.