Outstanding features of the book Detailed study, practice exercises and activities. NCERT FILE solved at the end of each chapter, in-text questions, exercise questions and exemplar problems. COMPETITION FILE includes previous years' NTSE (SAT) questions with answers. A number of HOTS with answers are given in each chapter to enhance thinking capacity of young scholars. Specially designed questions (solved as well as unsolved) covering all types of questions: objective type questions (MCQs, assertion-reason and case study/ paragraph based questions, etc.), very short answer type, short answer type and long answer type questions Answers and Hints to selective questions of all types is a significant feature of the book. Students as well as teachers would find the book to be a valuable and self- contained resource, one that lightens their workload and gives them all the support they need to achieve excellence.