"This completely new and innovative textbook provides a comprehensive account of pericyclic reactions and organic photochemistry for undergraduate and postgraduate courses. The approach is based on mechanism and reaction type, and the subject matter is developed and concentrated on better understanding rather than on merely grasping factual knowledge. Major modifications have been made in chapters 3, 4, 5, 7, 8 and 10. Stereochemistry aspect has been discussed in great detail. A new chapter on Objective Problems and Their Solutions has been added, which may be of immense use for the students and teachers. Updates in the text have been made wherever necessary. This will prove a boon to the students preparing for the NET (CSIR), GATE, SLET, IAS and other competitive examinations. Key Features: Basics of the subject are explained in detail. Important points are revisited and mentioned wherever they are relevant. Provides over 200 excellent thought-provoking textual problems. Glossary and questions for self-assessment are given at the end of each chapter. The most important aspect of this book is Chapter 14 containing about 400 problems with their solutions based on pericyclic reactions and photochemistry. Applied photochemistry is also discussed in the book. A comprehensive work covering modern topics like Pericyclic Reactions and Photochemistry are dealt in detail. 2000 objective problems for CSIR and GATE have been included in the book."