In this edition, Assertion Reason Questions (ARQs). Case Based Questions (CBQs) have been included as per the new syllabus and the latest guidelines issued by CBSE. This edition has been revised keeping in mind the concept of learning outcomes as suggested in the guidelines issued by NEP 2020. The concepts have been systematically explained through use of diagrams and tables. Large Number of Questions based on Remembering, Understanding, Application and HOTS with answers have been given at the end of each chapter.
