IIM Ahmedabad - Indian Institute of Management

It's better to explore which field you have interest in, and then decide the specialization. You have to choose your specialization at the end of 1st year of PGDM/ MBA. By that time you would have had a taste of the core subjects (Marketing, Finance, HR, Operations, Analytics). You can choose easily.

MBA in Marketing has more opportunity than telecom for Electrical Engineers as Marketing covers more area than telecom sectors.

my point of view it's very low perentile

looks to be difficult but keep hope and pray to God. apply to other uniz as well so that atleast u have something in hand and not waste a yr

Yes if you score more than 65 percentile. You get scholoarship

As you have mentioned that your scores are in between of 50-60% in your 10th and 12th. So, I think it is doubtful that you will get a call and even if they call you, if you would score 90% in CAT, there is a possibility that they will give priority to one who have a continuous good scores from 10th to graduation and in CAT and one who have good working experiences. But that's not end of all. There are good colleges where you can easily apply and you will be given weightage over others if your CAT score will be in 90s. So, don't lose your heart and start working.
All the best.

You will not able to admission in gujarat university's colleges because you have very low percentage of graduation. You should try in any other universities like IGNU, Ganpat university. You will get in that colleges.

You can get preparation tips from below link which will guide you.
https://www.shiksha.com/mba/exam/cat/preparation-tips
Hope this helps.