Engineering

Yes, you can get admission in JSS.

IIIT H is the best among all. It is even better than many of the IITs in the case of graduation outcomes on the basis of computer Science. It is primarily focused on IT field. Go for it.
Cheers.

Yes, you can get admission there.

http://upresults.nic.in/uptusee2018/seeresults.htm
Tap the link above and enter your roll number, and if there is no download rank card option, then simply print that page.

Preferably I'll tell you to learn C. C is also there in WBUT UG engineering syllabus for first year, so learning C in advance will help you to cope up with classes. Also while other will struggle learning C, you may learn advance C or other languages like C+ and Python.
C+ is a subset of C, so it'll

you can get IT branch there.

Less chance but you can try for KIET.

It is about 1 lac 25k for B.Tech in IT.

There are options you can choose any one i.e. General, OBC, SC and ST but you have to choose the home state as a Uttar Pradesh.

No, there is a very less chance with this rank in any of these colleges.