B.Ed

You need to have atleast 50% in graduation.

The course fee is around Rs 50,000 pa- 70,000 pa.

Hello Ajit,
It's very nice to see your dream of getting ready for next career. One must be ready while in service for life outside the army. Don't worry about your marks. Just download the brochure of IGNOU to get all relevant information about B Ed it PG in your subject of BA.

Yes you can apply for government job after completing B.Ed through distance and open learning.

The minimum criteria is-
1. Graduate or equivalent Examination with concerned subject as optional subject and Degree or Diploma in Education recognized by National Council for Teacher Education
2. Working Knowledge of Hindi written in Devanagari Script and Knowledge of Rajasthani culture
For more, you may visit then link below-
http://rpsc.rajasthan.gov.in/PDF_Reports_Files/Detail_Teacher_Gr_II_Elementary2013.pdf

Yes, you can pursue B.Ed after completing B.Sc. Graduates in any stream may look to pursue Bachelor of Education [B.Ed] from a recognized institution. Admission is based on either through entrance examination or marks obtained in the qualifying examination, whatever may be the admission criteria of the institution applying for.

Hi,
Yes, you can apply for PGT or TGT with your special degree (I think you are taking about - Integrated Degree).