CAT

Bhilai and Raipur are the two centres in Chhattisgarh.

It's good that you have started preparing for the CAT exam. In any case, a regular MBA is far better than any kind of Weekend Executive programme. Considering your 3 years of work Experience, it would be better if you pursue a 2-year regular MBA programme. Anyways MBA is like once in a lifetime opportunity. So give your best shot & enter into your dream institute, IIMB. Best Wishes.

Although it's difficult, but not impossible.
So, please don't lose hope .

You can try giving PGDBA exam. The course is jointly offered by IIM Calcutta, ISI Kolkata and IIT Kharagpur. You don't need GMAT or CAT for it. The intake is usually 62.

It will totally depend upon the preparation you do. Your educational background doesn't decide your score. It is sheer practice and hard work that will matter.

Most probably in the month of November.

Here is the list of colleges-
FORE School of Management, New Delhi-85 Percentile
Loyola Institute of Business Administration, Chennai-80 Percentile
ABV Indian Institute of Information Technology and Management, Gwalior-80 Percentile.

You can visit IMT CDL. You can see the details by clicking the link below-https://www.shiksha.com/college/institute-of-management-technology-center-for-distance-learning-imt-cdl-ghaziabad-28178?isource=sa&sakey=MTY0NjczNDE5NWJiYzE1YzMxNjQ2MzcwNDc5djM4MHYxNTM0ODU2Mzc2.

The correction window gets open for 2 to 5 days. You can do the changes at that time.

90-95 percentage in CAT is required.