Can we take extra time for submitting the required certificate during councelling in BIT Patna if we don't have those all at that time?
No, the admission procedure at BIT patna is pretty tight, so it is better to collect your documents as soon as possible for submission. If you do not have a particular document, form an application saying that you will submit this document by the end of the particular week or month. But, you can not avoid too many documents. So, get going and gather all your documents for a hassle-free admission procedure.