M.A Eligibility

A candidate for the Indian Economic Service must have obtained a Post-Graduate degree in Economics/Applied Economics/Business Economics/Econometrics from a university incorporated by of an Act of Central or State Legislature in India or other educational institutes established by an Act Parliament, or declared to be deemed as university under section 3 of the University Grants Commission Act, 1956 or a Foreign University approved by the Central Government from time to time.
For further information, please check: http://www.upsc.gov.in/

Yes, as you have the graduation degree so you can opt for post graduation.

The Central government has made it clear, that it is mandatory for candidates to pass Teacher Eligibility Test (TET) to land up in a government school as a teacher. As per the new guidelines prepared by National Council of Education Research and Training (NCERT), those who aspire to become teachers in government schools will have to clear TET.

Please refer to the link provided below for details regarding JNU entrance test in 2018 for MA in geography.
https://www.shiksha.com/humanities-social-sciences/exams/jnuee

You should join a course which can provide you some good skills which can be helpful to get a good job.

Hello, all countries except US and Canada accept 3 yr degree courses, so you will have plenty of options. Additionally check for GRE or GMAT requirements, work experience requirements etc.

Dear
PhD programme: You can pursue once you complete your Master degree not after Bachelor degree.
You cannot pursue 2 regular degree programme from same university.
If your diploma is equivalent to Master degree, then only you can apply for PhD according to university's eligibility and admission process.
All the best