A series of 2 books for classes 9 - 10The Main feature of the book are:-1. A Number of Activities based on general observations and common phenomena to help students to understand various concepts of chemistry.2. CCE Pattern of evaluation launched by C.B.S.E. based on formative and summative assessments.3. Multiple Choice Questions for sound confidence of students.4. Review Question (Covering Exam Questions marked with years) at the end of each chapter to the understanding of students.5. Latest sample Question paper.6 .NCERT, IN TEXT PROBLEMS & END EXERCISE with simple language solution.