As you have asked about the process for the online balance enquiry in Union Bank of India, I am giving you information about it

You can check the balance online if you have the internet banking facility of the Union Bank of India.
You can follow steps given below to check the balance.

Go to Union Bank of India website
Click on Internet Banking, the page open look like



Here click on Retail User login
Then click on Continue to Login, the page open look like




Here enter the details like

User ID
Login Password
After login, you can check the balance.