Hey Sankari

As afr as NIT for mba is concerned, you cannot do MBA after your +2. You have to hold a bachelors degree to get admission in any MBA course. To get admission in MBA in an NIT you will have to give CAT exam. So before you give the cat exam you need to get a bachelors degree (be it in BBA or B.Com (//B.Com) ). Since you have already got a seat for B.Com (//B.Com) in a college then just complete it first while taking any coaching for CAT. All the best,