Colleges in Ranchi

Hello Bhaskar Anand,
Enter your rank in the link given below and get the list of best colleges, if BIT-Mesra is in the list, you can be sure of admission:
https://www.shiksha.com/b-tech/resources/jee-mains-branch-predictor
Hope this helps! All the best for your admission!

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.

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