Yes, if you are in final year or if you have completed your graduation with 50% or aggregrate then you are eligible for nmat and nmims.

there are various other colleges also which accept nmat as a entrance exams other than nmims:

Chitkara College of Sales and Marketing, Chandigarh

SDA Bocconi Asia Center, Mumbai

SDA Bocconi Asia Center, Mumbai

K J Somaiya Institute of Management, Mumbai