This book contains actual O Level Chemistry examination papers, from 2009 to 2020, Paper 1 and Paper 2 with full worked solutions. The questions, are arranged in topical form so that the students can revise and practice methodically. Questions from past examinations have always proved to be the best practice for students. Students are able to apply what they have learnt. This book is also a very useful study guide for students as they can practice the questions, and then check their answers . This book is highly recommended for the students who are preparing for the O Level Chemistry examination.