Economics

There are many career options available but I think you should go for your PG in Economics as career prospects for economics graduates are very good both in the public as well as the private sectors. In the government sector, one may try for Indian Economic Services, jobs in Reserve Bank of India, PSUs and other public sector banks. All these jobs have wonderful career options.
Try to get admission in the colleges like DSE Delhi, JNU, BHU, UPES Dehradun etc which are very popular for this Economics courses. Admissions are still running so you need to apply at the earliest. All the best.

Placements are skeptical and cannot state the average CTC, neither recommended for HR.
https://www.shiksha.com/getListingDetail/4247/institute/college-Lalit-Narayan-Mishra-Institute-Of-Economic-Development-Social-Change-Patna-India

You are eligible for PO and clerical jobs in Public sector banks on completion of BA. You are advised to take bank coaching. In case you want to join private banks, it will advisable to do MBA preferably in Finance.

u r not eligible for btech
try for diploma or
do One yr.+2 in pcm from NIOS or
do mca after degree

CA, CS, MBA are good options where u can get huge salary

It is recommended that you do either MA Economics or MBA Finance to have a good career. You chose any based on your interests to excel.

For master's in eco u need Bachelor's in eco so it would be difficult to get admissions. Ignou take admissions with any Bachelor's degree so you must check with the university you wish to apply.