Civil Engineering

Hi,
As per their website, the university recognized under section 22 of UGC Act 1956, so there should be no issues. But, please check directly with the university before applying. You must also meet the admission requirements and your grades are quite good. You must take IELTS before applying.

You cannot decide this without your rank. So, to get admission in good colleges for civil engineering, you have to qualify for LEET entrance exam with good marks.

Yes, Bhagat Singh Engineering College can directly give you admission in B.Tech civil engineering, but it does not offer high packages.

Civil engineering as it has wide scope in private and government sector also.

You can take admission in B.Tech 2nd year through lateral entry.

CSE is a better option than civil, it depends on the business and companies present in North East region. I guess Kolkata is the place where you will find many IT companies. As North East is mainly known for Tea plantation industry, but other sectors are also growing.
As India is moving towards digitization and aggressive policies of current government like Skill India and Digital India, in my view CSE is the branch you should look for.