BITSAT

BITSAT Eligibility criteria:
1. Candidates must have passed 12th or equivalent exam from any recognised board with Physics, Chemistry, Mathematics and English Subjects.
2. Candidates must have obtained 75% marks in PCB or PCM group with at least 60% in each subject physics, chemistry, mathematics/biology.
3. Aspirants who have passed 12th or equivalent exam in 2015 or earlier are not eligible to apply.

Kindly check the eligibility from the link below:
https://www.shiksha.com/university/birla-institute-of-technology-and-science/bitsat-exam.

Yes, you can prepare for that on your own. Just solve the previous year's papers and also to begin with, clear all your concepts from NCERT, and then practice as many questions as possible.

VITEE for VIT University and SRMJEE for SRM University are the two best options after those.

Marks required to get selected for the course depends on the cut-off which is different all the time. Look at previous year cutoff. One of my class mate has secured 3000 rank in her JEE Mains she got very good government. University to do B.Tech in computer Science she is doing from IGDTUW, DELHI.
All the best.

Students are also not allowed to give BITSAT twice in the same year. Hence, a candidate can only appear twice for BITSAT once in the year he or she gives his or her 10+2 board examinations and again in the next year.

For sure, there is no doubt in it.

Please click the link below for all the details related to BITSAT preparation
https://www.shiksha.com/b-tech/articles/bitsat-2014-10-success-tips-to-crack-the-exam-blogId-7569.

It is private college, and one of the top private college of India.