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. Anumber 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.