CAT

Coaching centers usually differ from city to city. Usually, in an area, local coaching centers are often better alternative than famous coaching centers. But as other mentors have mentioned, TIME is a good institute and has its branches in many cities.

More than 99.5 percentile in CAT is required to get the admission in IIM for MBA. You have a good score in 10th and 12th.

Oakbrook Business School, Ahmedabad is a good option. You can apply directly in the college by contacting the admin staff of the college.

Some common and important topics in logical reasoning are Coding and Decoding, Seating arrangements, Analogy, Letter Series, Number Series, Clocks and Calendars. These topics need good attention.

Not at all. Most people pursuing CAT have a gap in their education. It doesn't affect your CAT score.

You can apply for CAT/ other MBA exams before your graduation.

I think you can. Your PG degree must have mentioned somewhere that you are a Bachelor + Masters. So, you should be able to apply.

Both are good. If you want to work in a Technical field then do B.Tech or if you can work in any company then do BBA as it will be only 3 years conpared to 4 years B.Tech. But again when you study in B.Tech your knowledge will increase and you will have better chances of getting a good score in CAT.

Well, you really have a good curriculum background but still, you have to score well in CAT exam at least above 98 percentile to be on a safe side for IIM-A.

90+% in both 10th and 12th would be required atleast if you score 95 % in CAT exam. Your overall merit will determine your chances.