Hi Sakshi,

BIT Mesra comes in the league of NIT T, NIT S, NIT W whereas NIT J is a bit lower ranked, but having said that, NIT J by the virtue of being an NIT comes under the Institute of National Importance. BIT Mesra has its Alumni in all the Top Universities around the globe (you see, being such an old college would certainly fetch you a legacy). So no worries on that as BIT Mesra would get you an upper hand as far as getting into a top University abroad is concerned.

The grading system at BIT Mesra is absolute and the evaluation process is also very strict, so it is difficult to score marks in BIT as compared to many NITs. Your CGPA might take a hit if you don’t study well in BIT. 

I would suggest choosing a college among the two based on your preferences like closeness to your home, Coaching/guidance for GRE, Alumni connect; rest apart, both are good colleges and would provide you equal opportunities.

Good Luck!