This edition of the book has been revised and updated strictly according to the new revised syllabus and examination pattern prescribed by the Central Board of Secondary Education, New Delhi.

The book has several unique features which make it distinct from other available books on this subject. Some of the special features of the book are:

1. Project Work as per latest CBSE Guidelines including Sample Questions for Written Test in projects.
2. Large number of questions based on Incomplete Information (i.e., missing figure questions) have been given.
3. The book also contain large number of Case Based MCQs, Assertion-Reason Questions, One mark Questions, True/False Questions, Fill in the Blanks Questions, Matching Questions and Multiple Choice Questions (MCQs).
4. A number of illustrations have been given in each chapter and these have been solved in such a simple manner that students can easily understand them.
5. Practical questions given at the end of each chapter are based on latest CBSE question papers and these are numbered according to the illustrations. Answers and Hints to solve the questions have been given at the end of each question. We are very much confident that after doing the illustrations, students can independently solve the practical questions.
6. The book contains objective-type, short-answer type and practical questions at the end of each chapter so that students may test their understanding of the chapter.
7. To ensure that the size of the book does not unduly increase as we need to add fresh Illustrations and Practical Questions in each chapter, we have provided additional Illustrations and Questions through QR Codes to help the students.
8. Weightage to each topic has been given according to the marks allotted to it by the CBSE.
9. Accuracy is one of the main features of the book.