GMAT

Hi Pavan,
Overall, requirements are different. Generally, a score of 650 is acceptable by most universities and 700 and above is recommended for the good universities. The higher the universities are ranked, the higher the requirements would be.

Hi,
Quantitative aptitude, data interpretation, analytical and general knowledge are the sections, which you get in the entrance exam.
You can check the below mentioned link:
https://www.shiksha.com/mba/exam/iift/syllabus
All the best.

Yes, you can get. This is based on your academic marks and also based on your IELTS marks. First, you work out the total cost. Then, plan how you are going to raise funds. You may not get 100% you might get partial scholarship. British Council gives 3 lakhs scholarship for IELTS marks.

IIFT is India's best B-School for MBA (IB) which accepts GMAT score. But only foreign students, NRI and children of NRIs are eligible for admission by GMAT score and remaining category of students have to appear for IIFT entrance examination to seek admission in MBA (IB).

You have got fantastic score and you are surely eligible. You can also check alternate colleges with similar ranks below:
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310

Yes you have fair chances at 590. Program is very good with good international opportunities. You may also check some other institutions in case you don't get XIMB. Please check the below mentioned links:-
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310

IBS is a good brand and provides decent placements, so you can go for management studies.
You can check the below mentioned list for top MBA colleges under GMAT:
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310

Yes GMAT is acceptable at IIMs for executive MBA. You can get more details on GMAT examination below:
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310

Yes chances are great with this score, you may also get good colleges like S.P Jain Mumbai. Check list of colleges under GMAT.
https://www.shiksha.com/mba/ranking/top-mba-colleges-india-accepting-gmat/2-2-0-0-310