Chatra Mitra is an educational app for students of the West Bengal Board who are in the middle of studying their classes. In this app, we provide all the solutions to the questions of the class. It is an application developed by ZERO, a company which is known for providing educational solutions to the students of the country. We have built this app for all the students of the class 6 to 12 of the West Bengal Board. We have used a very simple and easy-to-use interface to make this app very interactive. You can easily search the solution of the problem from your book by typing the serial number or by manually opening the page.