Tamil Nadu

That is a very specific subject and I am not sure if a course exists for solely that topic. Automobile Engineering, Electronics Engineering or Instrumentation Engineering are some courses that deal with this topic.

B.Sc Agriculture or Bachelor of Science in Agriculture is an undergraduate Agriculture Science and Technology course. The duration of this course is four years. Candidate must have passed class 12th with PCB with at least 50% to 60%. As per my knowledge, you are not eligible to get admission good government college to pursue B.Sc. Agriculture in Tamil Nadu after scoring 140 cutoff marks in +2 exam, so my suggestion to you is that you can apply for admission in that college which accept your score.

After May, the admission process will begin for B.Tech in St. Joseph's College, Chennai.

Some of the good colleges that offer B.Sc Information and Technology in Chennai, are-
1. SRM
2. Wisdom School of Management
3. Loyola
4. Mahatma Gandhi University
For more details, please click
https://www.shiksha.com/it-software/colleges/b-sc-colleges-Chennai.

Hindustan University is one of the best university in Chennai, and it is very good for B.Tech in automobile engineering, as it is known for this. So, I think you should take admission in this university.

Welingkar is good in staff, placements, campus life, industry exposure.

Yes, you can join. But, you have to take JEE Mains exam. After this, you can join this college.

Yes, you can opt for the same. You can visit the official website of Mumbai University for detailed information.

You need to appear for the written test conducted by the college. Once shortlisted, you will be called over for the personal interview, based on marks you will obtain in written test. Then comes the final selection. Click this link for more information-
https://www.shiksha.com/college/loyola-college-lc-Chennai-nungambakkam-1108/admission.