Masters

Yes, you are free to join PG in mass communication after you complete your B.Sc. provided you clear all your papers and do not have back logs at the time of admission. Please refer to the link provided below for a list of colleges which offer courses in Mass communication at PG level.
https://www.shiksha.com/mass-communication-media/articles/top-10-mass-communication-colleges-to-join-at-pg-level-blogId-8790
The basic eligibility for admission to MA in Mass Communication is a Bachelor degree in any stream of minimum 3 years duration. It is not compulsory to have a Bachelor degree in Journalism or Mass communication but it certainly gives an edge.
There is no restriction with respect to stream of education in graduation. However, certain universities do not accept application from students who belong to Engineering or Medical streams.
Most of the universities do not follow age restriction but there are some universities which do not allow any candidate above 30 years of age.
Work experience is not compulsory but universities do prefer students with prior work experience in the field of media and journalism.
How to Get Admission in Master of Arts [MA] (Mass Communication)
The process of admission to MA in Mass Communication is through an entrance test conducted by respective institutes. The process of admission is best explained in the following Steps:
Entrance Test
Personal Interview
Admission