Quiz Chapter wise Ch:12 Periodic classification of elements Ch:13 s-Block elements Ch:14 Group III-A and IV-A elements Ch:15 Group V-A and VI-A elements Ch:16 The Halogens and the noble gasses Ch:17 Transition elements Ch:18 Fundamental principles of Organic Chemistry Ch:19 Alphatic hydrocarbon Ch:20 Aromatic hydrocarbons Ch:21 Alkyl Halides Ch:22 Alcohol phenols and ehters Ch:23 Aldehydes and ketones Ch:24 Carboxylic acid Ch:25 Macromolecules Ch:26 Common chemical industries pakistan Ch:27 Enviromental chemistry