The manual is intended for preparation for the Main State Exam (OGE) in chemistry. It will help to systematize knowledge on the subject, focus on the most important issues submitted for final certification, as well as correctly build the strategy and tactics of preparation for the OGE. The manual is compiled taking into account the specifics of the main curricula in the subject and contains a short theoretical course of basic general education, presented on the basis of a codifier developed by the Federal Institute for Pedagogical Measurements (FIPI).