M.A

JNU is better for political science.

University of Mumbai. However, to be eligible to apply for MA psychology you need to give a written test at department of psychology university of Mumbai, Kalina campus, Vidya Nagari Santacruz. The syllabus will.be based on psychology subjects of first year, second year and 3rd year BA.
If you want to do in distance learning then IGNOU, University of Madras and Annamalai University allow a non psychology graduate to pursue MA/ M.Sc in Psychology

Yes, BHU is one of the well-known institutions of India. You should opt for MA in economics in BHU.

Jobs directly related to your degree include:
Actuarial analyst.
Chartered accountant.
Chartered certified accountant.
Chartered public finance accountant.
Data analyst.
Economist.
Financial risk analyst.
Forensic accountant.

You can become any of these:
Regional and Urban Planner
GIS and Remote Sensing Specialist
Geographer
Forest Manager Demographer
Cartographer
Agricultural Specialist
Climatologist
Transportation Manager
Environment Manager