Class 12 Biology जव वजञन is a free Android application developed by Mr Dheeraj, designed to help students prepare for their Biology exams. The app provides solutions to all the chapters of NCERT Class 12 Biology in both English and Hindi mediums. The app has a user-friendly interface and is easy to navigate. It provides quick revision notes and key points for all 16 chapters of the NCERT textbook. The app also includes value-based questions for students to practice and get better marks in their exams. The NCERT Solutions for Class 12 Biology provided in the app are accurate and reliable. This app is an excellent resource for students who want to excel in their Biology exams.