Do you Know !! What is Organic Chemistry ? Definition : “The study of structure, properties, composition, reactions and preparations of hydrocarbons and their derivatives.” The word “organic” means Life. Organic Chemistry: (old concept) Organic chemistry is the study of compounds of carbon as carbon is the essential element in all organic compounds. Compounds ofWhat is the | Organic Chemistry Old Concept and Modern Concept | Class 12 Chemistry Organic Compounds Lecture 1