It is not clear whether you have retained Nepali citizenship or acquired Indian Citizenship by the virtue of marrying an Indian National. Also it is not clear where you would like to pursue your Bachelor's degree from. Each State has its own admission criteria for Indian Citizens and Foreign Nationals. And so it is important to zero on a College first. Most Universities have entrance examinations for admission to Undergraduate and Post Graduate courses. There are also Universities that accept merit based admissions. So it is important to figure the College that you want to take admission in, understand its admission procedure and move ahead accordingly. You will not need any approvals from Embassy but you will need all your Original documents including a valid Passport. You also might have to furnish your Sponsor details for few Universities. And there are certain scholarships for Candidates who wish to pursue Education in India and you can check them at https://www.edoofa.com/home. Now most Colleges and Universities have completed their admission process for this academic year and so you might have to wait until the next academic year.