Dear Debabrata,

     I believe that the  enquiry is for Anurag Ghosh . To understand the admissiuon procedure for engineering in Birla Institute of Technology, Mesra, Ranhi... it is very well explained in their site. The link is 

https://www.bitmesra.ac.in/Show_Admission_Page?cid=1&deptid=11&pid=20.

Hope this helps..

Good luck !

Dear,

its better you can chck it through college official website because different colleges have different admission procedure.

Good Luck dear!