NIOS 12 th

Hello,
Yes, NIOS student can appear for WBJEE. All the best. If you find this helpful do give an upvote.

Yes, you are eligible for pursuing B.Sc Agriculture. You can check the list of best colleges around you on Shiksha. Com.

Students must apply for TNEA. For TNEA. Candidates need to passed HSC or equivalent with minimum 50% marks. And NIOS offers senior secondary course equivalent to class 12th. So, TNEA accepts NIOS. Please click the link below for details. https://www.shiksha.com/university/anna-university/tnea-exam.

Please refer to this answer. https://ask.shiksha.com/what-should-i-do-to-be-an-air-hostess-i-have-done-12th-and-i-am-from-guwahati-qna-3961045.

You can take admission, but you have to qualify admision test.

Yes, you surely can, but in most entrances they ask you to qualify required subjects in one sitting.

Hi!
You can refer https://nios.ac.in/online-course-material/secondary-courses/admission-detail-for-various-courses.aspx.

Yes, you can apply, if meeting the eligibility criteria. The NIOS certificates are valid at par with other certificates like CBSE or state boards. The integrated BBA+MBA programme at Galgotias University is 5 years duration programme. The eligibility criteria for BBA+MBA integrated is class 12th with minimum 60% of marks in best four relevant subjects. The course fee is about Rs. 87,000/ per year.

Hi Gajanan,
NIOS won't be a problem for you to pursue higher studies abroad. But there are certain requirements like taking a certain number of subjects for the 11th and 12th. Also you may inquire @ the university regarding the course structure of your preference, fees, etc.
All the best.