Colleges in Telangana

It takes place on the basis of merit. Generally, this is how it takes place as there is no entrance for B.Com.

Hi Sree Chandana
Kindly predict your college in this college predictor. JEE Main rank predictor is an online tool which predicts the candidates rank range and probable colleges based on the difficulty level of the examination, average marks scored in JEE Main and seats available in IITs, NITs, GFTI

According to your percentage, there is chance to get admission.

No, you can't do. You have to wait for a year because the minimum age for PG Diploma should be 20 years.

It is quite possible, you may get seat in second or third counseling, best of luck.

Your question is, which is the best IHM mentioned in your question in terms of placement. I have arranged them in ascending order for you.
IHM Goa
IHM Hyderabad
IHM Kolkata
IHM Chennai.