Hi Rohit, 

There are many renowned colleges that offer diploma in journalism and mass communication. To get admission in a particular college, you have to appear for the entrance test and clear it. I am giving a list of the colleges below from  where you can pursue the course:

1) Indian Institute of Mass Communication 

2) Jamia Milia Islamia 

3) Asian College of Journalism

4) Times School of Journalism 

5) Delhi College of Arts and Commerce 

6) Apeejay Institute of Mass Communication 

There are plenty of colleges in north india viz:-
1.Indian Institute of Mass Communication.
2.Jamia Millia Islamia.
3.AAFT
4.Bhartiya Vidya Bhawan.