Salient Features of the book are: * Class-tested and well-graded material * Simple and lucid textual flow *Necessary content to impart a sound theoretical and conceptual base * A large number of illustrations for easy and better understanding of the subject * Multiple Choice Questions (MCQs), Assertion-Reason Based MCQs, Very Short Answer Questions for better understanding of topics * Additional illustrations and questions given in QR codes to help students assess their understanding of the subject *Past Examination Questions, both Theory as well as Practical, set in previous years’ exams and Sample Papers * Question Paper to Test Your Knowledge at chapter-end.