B.Tech Computer Science and Engineering

Unless you want to go by brand name of IIT, NSIT is a better option for BTech CSE in comparison to IIT Dhanbad.

Except Jadavpur University there isn't any top institute for engineering in West Bengal.

Hello Kuldeep,
Colleges offering direct admissions are very rare. But I would suggest you can try your luck by approaching some private engineering college for admission via management quota.

Hello Deepak,
UPES takes majority of admission through her own exam conducted by the college fir getting admission in various course available.
Exam name is UPESEAT conducted on 13th may 2017 so you have to fill form by the official site of college and then go through exam for admission.
All the best.

Hello Vishu,
Chandigarh University is best than JECRC.
For more details about Chandigarh University, you may go through this link:
https://www.shiksha.com/college/chandigarh-engineering-college-25094

Chances are there if you have home state quota in the states having lower NITs. Otherwise, it will be very difficult for you to get into NITs.
PS: Assuming that you are a general category student.