Hey Shuva

In BC Roy Engineering College 30% of the studentsget placed but most of them are from  IT sector. The highest salary offered is 3.30 LPA from companies like TCS, Infosys, Tech Mahindra, etc. The faculty here is pretty good and the infrastructure is good too.

In NIT you will get a higher placement of around Rs4.5 lpa with companies like TCS, Wipro, Accenture, AIS Glass and Pinnacle who visit the campus. The highest salary offered is 10 lakh pa and more or less 70% of the students get placed. The faculty and infrastructure are great.

The fees of BC Roy is lesser than NIT but in terms of placement NIT is better.
I hope you will make the best choice by doing a thorough research on both the colleges. All the best!