IIT

Hi Archana,
Your query is not clear. For getting admission at BITS, IIT process is not involved. However, even if you are a student of Birla Balika Vidyalaya, you need to appear for BITSAT for getting admission into the B.E Course of BITS Pilani. The only way of getting direct admission at BITS Pilani is if you are a Board Topper. All the best.

Hello, goal for getting admission in IIT. First, you need to clear JEE Mains, and then you need to get an AIR under 10000 in JEE Advanced to get admission in IIT. As you haven't cleared JEE Mains, so you are not eligible for JEE Advanced. It means, you cannot get admission in IIT. Better take a year drop and start preparing from now, through which, next year you may clear both the exams and take admission in IIT.

Just focus on your reasoning, mental ability and some basics mathematics and focus on the GD-PI.

The tuition fee per year for BCA in DY Patil is 55000/- INR. For more information regarding this course, kindly follow the link:
http://www.dypiu.com/bca-mobile-application-and-information-security.php

I would prefer you to thoroughly study your 11th and 12th syllabus. Prefer NCERT books for study solve their whole questions. Go for the link below to know about JEE Mains and list of books for preparation for JEE Mains:
https://www.askiitians.com/iit-jee/main/preparation-tips/

Actually, FIITJEE is better than Resonance for IIT-JEE Mains+Advanced coaching. FIITJEE is good in terms of practice papers, daily tests, doubts clarification, detail explanation, grand tests, etc.

You might have a chance if you have any reservation criteria else give it a try. You have very great chance to get into this institute with this rank.
Attend the counselling and choose your options appropriately.
Try shiksha college predictor for better analysis.

Yes, you can change the branch in second year but for that you need to top the entire batch and branch should also have a vacant seat, usually there are few seats vacant.

Go to Kotak or Indore otherwise Delhi will be good option for preparation of IIT-JEE. These cities have good atmosphere for study.