M.A

To be an investment banker, you need to have a strong foundation of mathematics. Prospective investment bankers need to have a Bachelor's degree in finance, accounting, or mathematics, for example, but may come from other fields like computer Science or physics as well. With M.A. in politics, it won't be possible to go for investment banking.

You need to have a minimum of 50% to be deemed eligible for this course.

Yes, it is NCTE approved. Please refer to the link to know about the approval: http://jjtu.ac.in/Upload/Circulars/NCTEApproval.pdf.

Yes, you can apply for MA in education. For details refer:
http://www.ignou.ac.in/ignou/aboutignou/school/soe/programmes/detail/72/2.

Sorry, you are not eligible for APSET exam.

For MA in economics, your knowledge of mathematics up to 10+2 level will be tested in the entrance test.

Why not? Join IGNOU. You can find a center in your nearby area. Log on the website of IGNOU. You require graduation marks as 50 percent if general or 45 percent if other categories. Download hindi version of BEd prospectus. http://www.ignou.ac.in/userfiles/BED_Pros_Hindi_17.pdf Regards.

In which college do you wish to apply? As the criteria is different for the entrance in every institute.