B.Tech

The student must be passed 10+2 examination with Physics and Mathematics as compulsory subjects. Also must have at least 45% marks in diploma or 40% for reserved categories. Admission shall be made on the basis of the latest JEE Main(Paper I) score.

Well, sorry to say that you cannot get a government college for CSE branch but you definitely can get a private college. Hope I answered your question.

Well, for B.Tech in computer science and Engineering at Sharda University your matriculation with - 60 % marks Sr. Secondary (10+12), 70% marks( aggregate) and 60% minimum in PCM Computer Science without any gap year. Your JEE All India Rank should be up to 3 lakh or UPSEE All India Rank be up to 50000 Hope your query is resolved.

Eligibility criteria is should pass your 12th with 55% in PCM aggregate 50% for SC/ST/OBC. And all colleges will provide free seat you get qualified in entrance test. According to last year cut off ranks, you may not get admission. But this year, you may have a chance.

Yes, by joining management.

Yes you can get admission in NIT but branch may differ from your choice. However in low NIT's you can get even good branch also. Now for taking seat in IIT you should first clear JEE advance examination then according that rank you can get admission in IIT. Here are few NIT's where there ia a chance that you can get seat :
NIT Jalandhar : here you can get Industrial and Production Engineering
NIT Durgapur: here Biotechnology you can get
NIT Nagaland: Here you can get Electronics and Instrumental engineering
NIT Raipur: Biotechnology you can get here
NIT Agartala: Production engineering you can get here
There may be few more colleges.

To be eligible in First Semester, candidates should have secured JEE (Advanced) AIR rank up to 12000 OR JEE (Main) Percentile of 97 and above. To be eligible from Second Semester onwards, candidates need to maintain a CGPA of 8.50 or above and no backlog

You can get admission in a state government college mostly but branch will be not too good. In central government college there is very few chance that you will get any seat, so you should try in government college of your state only.