Dhanbad

Of course, you can apply for JCECE. No matter from where you have passed your class 12th. But, when you are filling form of JCECE, you have to mention about your domicile state.

You can get some help on this link:
https://iitism.ac.in/index.php/placement#phomem.

Among all of these colleges, BIT Dhanbad is best for M.Tech. It is ranked among the top of the colleges in India.

No, MBA in mining is a rare course and chances of getting a job are very less. Since you are a BBA graduate, you will be lagging behind the technical part of mining. So, I prefer not to take this course.

Yes, it will. the only difference is that your domicile will be of Jharkhand.

I'm not yet aware of the details of which the best MBA program is, if you could give me your email ID I will inquire and email the relevant information to you.

It all depends on your interest. Electrical is a core branch, so choose wisely. I would suggest going for electrical in IIT Dhanbad as placements are good in electrical. If the branch would have been same, then IIT BHU would be the choice.

Hello Dheeraj,
IIT Dhanbad is not actually an IIT, it is ISM Dhanbad, the famous institution for mine engineering. IIT Jodhpur is a new IIT as compared to ISM Dhanbad, so no placement data will be available for you to judge which one is better, in this case, go for the IIT that is old and established I.e. ISM Dhanbad
Hope this helps! All the best.