features of the book : Chaptwise summary😁 knowledge booster tips and tricks and common errors🥳 the latest solved typologies of competency based questions🤩 ncert textbook questions👍 highlighted key points🕺 practice material in the form of chapter test at the end of each chapter 😄 include 5+ year board questions 🙈 2400+ questions 🤩😍 order fast ⏩ book available in affordable price without any damage😊