The term online service bihar refers to the digital services provided by the Bihar government that allow citizens to apply for various documents and schemes online. Using online service bihar, you can easily apply for certificates like income, caste, and residence, as well as access services such as birth and death registration. To get started, visit the official portal, register or log in, and choose the service you need. Fill out the application form, upload the required documents, and submit it. After submission, you will receive a reference number to track your application status online.