Colleges in Rajasthan

Yes, it is DEC approved.
Link:https://www.ugc.ac.in/pdfnews/2920185_Vardhman-Mahavir-Open-Univ.pdf

Yes, B.Ed offered at Tantia University is a part-time course and duration is 3 years. For admission in this course you must have completed graduation in any discipline with minimum 50% or Basic School Teaching Course with 2 years of experience.

For admission eligibility of this course you can visit the following link: https://www.shiksha.com/b-tech/course/b-e-in-electronics-and-telecommunication-engineering-thakur-college-of-engineering-and-technology-kandivali-east-mumbai-239786
And for more details regarding your scenario, it would be better to get in touch with the college: https://www.tcetmumbai.in/contact.html

Hi, NIOS is government authorized board and recognised by all Universities and educational institutions in india. NIOS certifactes and mark sheet issued just after 25 days of NIOS result, you may contact to your concerned regional center. Polytechnic college will accept yours NIOS mark sheet and for the time being you may obtained your certificate from your regional center. Good Luck.

Hi Rajesh,
The last date of admission was 10th April. The admissions are closed now.

Yes, you can become a lawyer. You will have to give entrance exam for a 3 year law course.

For VIT, it is minimum 60% marks in class 12th. For BITS, it is 75% marks.