Dear Kratik
The merit list for admission to the course is usually prepared on the basis of the candidates performance in a relevant qualifying examination and entrance exam. General weightage is given to both the score obtained in the entrance exam, and to the score obtained in the last qualifying examination.

The round of written test is often followed by subsequent rounds of Group Discussion and Personal Interview.
The procedure,  which I mentioned is same for almost all colleges but there are slight changes in Rome colleges too.
If you need more details about the colleges offering to his course, fee etc.., click here
All the best.