Chapter inside is given at the start of each chapter with the list of all the chapter topics Note Matter contains additional but informational matter related to the given concept Simplified theory is given and is well supported by Definitions, facts, figures, flowcharts, etc. Illustrative Figures make the concept completely visible Chapter practice exercises contain questions in the format in which these are asked in the examinations ISC Examination Paper 2025, ISC Specimen Paper, and Sample question papers make this book complete in all aspects