Birla Institute of Technology, Mesra

You need to check the opening and closing ranks of the previous years to get the idea whether you will get admission or not. Also, you should be very clear about the branch you would like to take admission into and check the ranks as per your choice.

Hi Dear,
Kindly use the JEE Mains college predictor app to get more insights about the shortlisted colleges for your JEE Mains score. https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

Hi Dear,
Kindly use the JEE Mains college predictor app to get more insights about the shortlisted colleges for your JEE Mains score. https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

No chance, but you can try for it's Patna campus, maybe you can get CSE there.

Yes, you can. BIT mesra gives an option to it's students to change branch if there is a seat vacant in the respective branch and you have enough marks to change your branch.

Only the admission in BIT Mesra, main branch at Ranchi is conducted by JoSSA. For the extension centers, you need to visit the particular center and fill their application forms.

Admission procedure for any candidate is same in BIT Mesra, except if you are from a reserved category, then you have to show the category certificate whenever and wherever asked. This certificate will be asked you few times during the admission procedure and you have to produce it positively.
If you want to check the branches you can get admission into use the following:
http://josaa.nic.in/Result2016/result/OpeningClosingRank.aspx

That depends upon whether you are a student from the home state or a candidate from other than home state. You see, there is a reservation for the students who belong to the home state I.e, Jharkhand itself. If you want to lookup the opening and closing ranks for 2016 use this: http://josaa.nic.in/Result2016/result/OpeningClosingRank.aspx