can i do bms and b.com together
You should work hard to get through BMS.
The whole of BMS covers a minimum of 40 subjects and additionally a minimum of two projects per subject which means a total of 80 internal projects + 40 written papers = 120 things to do to pass in 3 years. That is quite a lot.
Moreover it’s expensive.
http://quadrosneil.wordpress.com/2010/06/05/6-things-to-keep-in-mind-before-joining-bms/