Special features of the textbook are : • Each chapter is divided into several sections covering all components of the syllabus. • It has logical and systematic presentation. • It incorporates a large number of diagrams and schedules with explanations. • To give students an edge over the basic knowledge of the matter, 'An Extra Mile' has been given at the end of each chapter. • Exercise is tuned to the pattern of examination. The exercise includes: • Questions relating to remembering & understanding of the subject matter. • Reason based questions. • Previous years' CBSE questions. • Information and concept based questions. • NCERT questions