MBA Entrance Exam

It is very less chances to get admission in MAH CET.

Your percentage is not seen in the interview, because interview round is an individual assessment. But, your overall score gets affected. If the interviewer knows your score it may psychologically effect his questions and judgement.

For taking admission in IIMS, there is only required of CAT exam no need of any other exam.

It depends on you. Both have equal scope, so if you want to do MBA from IIM, it is good and also if you wants to do MBA from any foreign University, it is also good, so choose which suits you.

In graduation, you need at least 50% marks for CAT or GMAT from any recognized University.

Yes, there are many exams:
CAT Entrance Exam.
CAT Full Form: Common Admission Test.XAT Entrance Exam.
XAT Full Form: Xavier Aptitude Test.
GMAT Entrance Exam.
GMAT Full Form: Graduate Management Aptitude Test.
CMAT Entrance Exam.
MAT Entrance Exam.
ATMA Entrance Test.
NMAT Entrance Exam.
SNAP Entrance Exam.

No, there is no restriction on number of attempts for giving CAT entrance exam. You can sit for CAT entrance exam multiple times.

I don't think you will get admission there with your score, from what I get through the internet the cutoff is indicated in the range of 150-180

Hello,
With that good score, chances are quite slim to get admission into either JBIMS or SIMSREE, if you are a general category student. Try for the offline rounds. Good luck.