B.Tech

There is no guarantee of 100% placements in Alkesh Dinesh Mody Institute though the institute tries very hard to place all the students. Most of the companies recruiting from campus have 60% and more criteria in 10th, 12th, graduation as well as MMS. Since your only 12th percentage is slightly less

Yes you can easily get admission in Alkesh Dinesh Mody Institute as well as other better colleges. Last year the cut-off in last CAP round for Alkesh Dinesh Mody Institute was 74 percentile so with you scoring 90 percentile you can easily get admission.

Go through the link :
https://www.shiksha.com/wbjee-college-predictor

You should have an outstanding percentage of around 98-99% than you may get admission in NSIT.you can get branches like (if you percentage is near the above mentioned percentage) me,mpae ice. Best of luck

Check the link below for detailed information :
https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0

Yes hostel facility is available with proper mess.

Every year varies. But if you have a rank somewhere between 4000 to 4500, you should get it.

what u want to ask is not clear.
if u passed class 12 n scored good marks JEE then u can.
there is no need to do any other course

there is no college in india for online degrees

you can get nits check if you have written a digit less.