MBA Entrance Exam

https://www.shiksha.com/exams/ignou-openmat-exam-syllabus
Check here.

You should score above 97% in CAT. 10th, 12th and Graduation marks are required to fulfill your eligibility criteria for CAT examination.

https://www.shiksha.com/college/department-of-management-sciences-Pune-university-pumba-ganeshkhind-30895
You will find all the true and authentic information about your college here.

Your academics are good. You'll get a good college but if you want best college then go for CAT/GMAT/GRE.

Yes, it is suitable.

Hi, The CAT 2017 changes were major, but the updates made later in 2020 are the ones which may persist this year. Keeping in mind the pandemic situation, the time allotted to each section was decreased from 60mins to 40mins. This means that the total time duration of the exam is now brought down to just 120mins which was 180mins earlier. Also, the number of questions was reduced to 76 in 2020. In the 2021 edition of the exam, this number was reduced by 10 to make it 66 questions. Hope this helps. For more updates made in the exam pattern please keep a close eye on the official website of CAT.

You can drop a mail to the management authority and they will reach out to you.

You have very less chance to get seat in NIT.

Yes, based on your category, you can get admission in MBA international business.

Here are some good options-
1-Faculty of Management Studies, Delhi
2-S. P Jain Institute of Management & Research Mumbai
3-Jamnalal Bajaj Institute of Management Studies Mumbai
4-Indian Institute of Foreign Trade New Delhi. You can try in the above mentioned colleges.