Masters

Hi
Yes, you can go for M.Sc. Economics after your Bachelors. Eligibility for M.Sc. Economics in most of the top universities is pass with 50% marks in your Bachelors. You must make sure that you are enrolling yourself in a premium university that provides you access to ample growth opportunities. Some of the top universities offering these M.Sc. Economics are:
Lovely Professional University- Punjab, Jesus and Mary College, Delhi, Aditi Mahavidyalaya (Women's College)-University of Delhi, Anand Institute of Social Work-Anand, Gujarat, Dr. Bhim Rao Ambedkar College (University Of Delhi), College of Social Work Nirmala Niketan-Mumbai, St. Xavier's College, Mumbai, Presidency College, Chennai, Christ University, Bangalore etc. I hope it helps.

Hi
If you are interested in journalism and mass communication than you can go for M.A. (Journalism & Mass Communication). Eligibility criteria for taking admission in M.A. (Journalism & Mass Communication) in most of the top universities is Pass with 50% aggregate marks in Bachelor's Degree. ( It may vary with the university you choose)
After M.A. (Journalism & Mass Communication) you can work as:
Journalists/Correspondents
Reporters
Editors/ Sub Editors/Assistant Editors
Public Relations Executives
Event Managers
Photojournalists
News Makers
Communicators
Advertisers
Corporate Communication Managers
Scriptwriters etc. The most important thing is that from where you pursue your post graduation. Its better to choose good institute or university which offers you good practical and industrial exposure, good placements like:
Lovely Professional University- Punjab, Aditi Mahavidyalaya (Women's College)-University of Delhi, Anand Institute of Social Work-Anand, Gujarat, Dr. Bhim Rao Ambedkar College (University Of Delhi), College of Social Work Nirmala Niketan-Mumbai and few others. These universities also offers various skill development programs, professional enhancement training and outstanding exposure to its students. They also provide worthy scholarships to its students depending upon the entrance test taken of the university or board result. These universities also offers top class learning environment to the students with extensive placement opportunities. I hope it helps.