Presenting to you the 5th edition of "CBSE CHAPTERWISE SOLVED PAPERS- BIOLOGY CLASS 12" which has been designed as per the latest syllabus & rationalized NCERT. Formulated in a chapter wise manner, this book covers all Previous Years' Question Papers from 2023-2011 along with complete solutions and arranging questions as per marks in descending order. In each chapter, Trend Analysis, Key Concept, and Concept Enhancer are provided to get a clear understanding of each concept. A section of Common Mistakes is also included which focuses on some critical mistakes that students commit while answering the questions. Besides this, at the end of the book, 3 sample papers are given for practice which make it a complete self-study resource for class 12th student.