IIT

You can use this tool to compare both these colleges.
https://www.shiksha.com/resources/college-comparison

Yes, because you have satisfied top 20 percentile cutoff marks of UP board.

Agricultural branch is very good in IIT KGP and scope is also good, as India's more than 50 % population depend on agriculture. You can get good package also.

Admission to B.Tech in BIT Mesra is done on the basis of AIR in JEE Mains through CSAB (Central Seat Allocation Board) / JoSAA (Joint Seat Allocation Authority). Candidates must meet eligibility criteria and apply for the programme. Campus Recruitment Programme of BIT has been an example for several

You can use this tool to compare these colleges.
https://www.shiksha.com/resources/college-comparison

Hi, as NIT Warangal is a well established university compared to IIT-Bhubaneswar it has an upper hand in placements. But if you're looking for better resources, facilities, atmosphere and faculty, you should go for IIT.

No, format is totally different, as in BITS, there are language preference. And, 120 questions are to be answered. There are 10 bonus questions round for the students who have reached up to 120 th question.

It depends on your choice fill-up. You cannot get a good IIT with branches at this rank. You may get a good NIT with good branches except CSE. Mock seat allotment is just for the 1st round. Therefore, it's not an issue. You can wait for the further seat allotment.