Periodic Classification of Elements s-Block Elements Group III A and Group IVA Elements Group VA and Group VIA Elements The Halogens and The Noble Gases Transition Elements Fundamental Principles of Organic Chemistry Aliphatic Hydrocarbons Aromatic Hydrocarbons Alkyl Halides Alcohols, Phenols and Ethers Aldehydes and Ketones Carboxylic Acids Macro Molecules Common Chemical Industries in Pakistan Environmental Chemistry