CBSE 10th

You can definitely try for SRM, VIT, Amity University and the colleges who have their entrance exams, so that your don't have to pay donation.

Hello,
Yes, at that CMAT score, you will surely get a GD-PI call. Just prepare well for the interviews and you would sail through easily. All the best.

For all top B-Schools, it is mandatory to have above 55% in under graduation to receive a call. This is AICTE rule under which most good colleges are affiliated.

No. For getting a better colleges such as IITs, you need to qualify JEE exam which you can give if you are appearing in 12th or 12th pass out.

You can contact an open school for that.

The following colleges can be the best suited to your profile as under:
1. Institute of Finance and International Management, Bangalore
2. IPE, Hyderabad
3. Alliance School of Business, Bangalore
4. Jaipuria Institute of Management, Lucknow
5. Department of Management Sciences, PUMBA (Pune University).

Yes, you have scored quite well. You will be asked to appear for GD and PI rounds once you clear the entrance test which is conducted by KSOM. I think the form will start coming from December 2019 for the admission process of 2020. For more accurate details, please visit the official site of KSOM.

GIM doesn't have any set bar specific to undergrad marks as far as it is more than 50.

No, it is hard for you to be acceptable in any of the college.

Yes, you can definitely apply for IIHM there are no such criteria that you cannot apply of you have gap in your 10th and 12th standard.