This is the thoroughly revised and updated 4th edition of the book Problems in Organic Chemistry for JEE Main & Advanced. It is a unique book that provides carefully selected problems for IIT-JEE based on the approach 'how much to study? & 'what not to study?. Features:# The book has been thoroughly revised and updated with new problems. # The book aims at developing concepts through problem solving. # Detailed solutions are provided to each and every question which brings out concept clarity among students. # The book contains 13 chapters. Each Chapter contains 3 levels of exercises: # Level – I builds solid foundation which helps in solving tough problems ahead - mailly for JEE Main. # Level – II takes you to a level at par with JEE Advanced, where tough problems are provided and you master applying the concepts. # Level - III Honing your skills - is the third exercise and it provides a lot of practice questions on critical concepts.# 2200+ Quality MCQs for practice.# 100% Errorless solutions have been provided at the end of the each chapter.# The sole aim of the book is to develop concepts through problems. # Problems have been fabricated keeping in mind the examiners view point for the particular concepts and the current examination patterns. # Reaction mechanism is the focus of the book and questions have been developed in such a way that all major reactions are covered.