Basic Concepts in Organic Chemistry is designed as a student text to meet the needs of students preparing for various competitive examinations. Each concept and principle is unfolded systematically, reflecting the vast experience, command and authority of the author on the subject. The subject has been explained using basic principles that make things easy to understand and absorb both for the beginners as well as advanced learners. Each chapter is followed by graded multiple choice questions (the core of the competitive exams) based on concepts, principles and applications, providing the student with necessary recapitulation and ensuring speed and accuracy.