CAT

You can give MAH CET or GMAT for JBIMS.

As your question already states, you have a low CAT score and NMIMS is currently considering its own NMAT score for admissions. If your CAT score is low and you want to get admission in NMIMS I will suggest you to apply for NMIMS test and target a score of 210 or plus for admission in NMIMS.
Thank you,
I hope my answer will be helpful.

https://www.shiksha.com/college/ssr-institute-of-management-and-research-ssrimr-silvassa-47976/admission
Check here.

There are some colleges that take direct admissions. You need to check upon the admission process of the college you are targeting.

Hello Geeta,
On this website, you get all the material for CAT or other material for the MBA entrance test. It is a paid website.

If you didn't clear the CAT exam, so don't worry. There are many other colleges that offer MBAs such as ZAIN UNIVERSITY, AMITY UNIVERSITY, etc. You can choose from these.

Most of the colleges accept GMAT and some of them accept CAT. There is no prominent exam as these two.

Yes, Diploma students can appear for these exams.

Last Sunday of November.

Try to score a minimum of 95+ percentile in each and every section in CAT Exam to get calls from any of new IIMs.