Exam

Hi Himanshu,
You can start by taking a mock test and get yourself acclimatized with the test, you will also know topics you need to revise, your weakness and also your strengths. Prepare your study routine accordingly. 3-5 months is enough, if you devote yourself regularly and stick to your routine.

I am sorry but you are not eligible for BITSAT, but you are eligible for JEE main and State engineering entrance exam. I will suggest you to prepare for JEE main and JEE advance. These exams are better than BITSAT.

It is not recommended to prepare for CAT by self-study as you want to get it done within 4 months. You can take coaching from a good coaching Institutions like: TIME or Career Launcher.

Notes from TIME Coaching classes have highest level and wide variety of numericals as per previously solved CAT papers and is recommended for the same.

Arihant publications Quantum CAT is good for quantitative section. LR, DI, Verbal ability books are also available by Arihant publications.

Hi Rakesh,
International applicants are usually asked to take IELTS or TOEFL for English language proficiency. Depending on the university requirements additional entrance test may be required, which would be program or department specific. You need to check the university websites for additional req

Hi Ankit, you can apply but whether you will get admission no one can predict or guarantee. Depends on your profile and MIT's internal selection process. There is no single factor basis which they decide.
You need not apply for scholarship, all applicants are considered for financial aid at the time

Edit
For more details contact 9538874444/5 or visit www.reva.edu.in

It looks difficult with 80% in CAT. But, as admissions depends on relative parameters, you can be hopeful.