1. This book has been prepared in accordance with the latest NCERT textbook. 2. This book provides a better understanding of various concepts in a simple and lucid language. 3. Solved NCERT Textbook Exercises and NCERT EXEMPLAR problems have been incorporated at proper places. 4. Includes all typology of questions based on NCERT- Very Short Answer Questions, Short Answer Questions and Long Answer Questions. 5. More emphasis on CBSE Competency-based Questions (As per NEP) instead of rote learning ? MCQs, Match the Following, Fill in the Blanks, True or False, Assertion- Reason Questions, Case-based Questions, Picture-based Questions and Activity-based Questions. 6. Self Assessment has been given at the end of each chapter to practice and evaluate students? understanding.