B.Tech

Hello Aditya Raj Singh, if we have a look at the cutoffs of previous years, it can be seen that ranking of about 11000 can get you this branch. Of course cutoffs do change due to trends in student's mind based on perhaps market scenario. To help you I am attaching a link that will give you all the required information about cutoffs.
https://www.shiksha.com/university/birla-institute-of-technology-mesra-ranchi-24087/cutoff
Best wishes to you.

Hello Khushal Sharma, these days admissions to engineering colleges is done through some or the other entrance exam. Except of course in Tamilnadu where criteria is marks in 12th board. In Bangalore or Karnataka, admissions are through two routes. Either by CET of Karnataka government or one conducted by private colleges. If you are desirous of admission without any of these exams, perhaps you can think of approaching private colleges for admission under management quota. Unfortunately there is no real information in public domain and you will need to approach each private college separately. Best wishes to you.

Yes, you have good chances of getting admission in NIT Agartala with this percentile in JEE Mains in electronic branch.

Firstly, there is no placement for first year, but they will make you prepare and give lots of exposure so that you can know about placement benefit which will be coming in 3rd year and 4th year.

Yes, you can apply for admissions now but you can take admission through your JEE score, and now counseling is going on. You can apply through your score or through donation.

B.Arch is a 5 yr course with almost zero campus placements. Only IITs and very few NITs offer campus placement. On the other hand, if you are doing B.Tech in CSE, ECE or IT from a reputed IIT or NIT, then the placement opportunities are unlimited. So my choice is B.Tech.

College of Engineering Pune is the best for placements and Fee structure for B.Tech courses. So COEP is recommendable here.

No. You cannot take admission in B.Tech computer Engineering without giving JEE or CET. You have to appear for atleast any one of the entrance exam for being eligible for admission.

Hi. Yes, a bio student can definitely pursue B.Tech in CSE branch, there is no restriction to it. You can pursue B.Tech in computer Science after 12th, if you have Maths in Class 12th. All BIPC/Biology students are eligible to get admission in Engineering courses such as Computer Science Engineering, Mechanical Engineering, ECE, EEE etc.