NET Eligibility

Distance degrees of recognised universities are valid for UGC NET. The eligibility criteria of NET is given below.Eligibility criteria : Candidates who have secured at least 55% marks (without rounding off) in Masters Degree or equivalent examination from universities/ institutions recognised by UGC in Humanities (including languages) and Social Science, Computer Science & Applications, Electronic Science, etc. Are eligible for this exam. As per the Annexure-IV of Information Bulletin of UGC NET 2020, The PG Management code is 816. So you can apply for UGC NET 2020. The last date of submission of application is 16 April 2020. Please read Information Bulletin of UGC NET 2020 by using this link.
https://ugcnet.nta.nic.in/WebInfo/Handler/FileHandler.ashx?i=File&ii=308&iii=Y

Because you are not specific about the university/ college, hence the eligibility criteria of GGSIU Delhi for B.Ed. (Two years of duration) course is given below.Educational qualification: Candidates with at least 50% (fifty percent) marks either in the Bachelors Degree and/or in the Masters Degree in Science / Social Sciences/ Humanities, Bachelors in Engineering or Technology with specialisation in Science and Mathematics with 55 % (fifty five percent) marks or any other qualification equivalent thereto, are eligible for admission to the programme. The University shall follow NCTE guidelines/ regulations for the B.Ed. Programmes for admissions and implementation.
Admission Criteria: Admission shall be on the basis of the merit of the written test /CET. The eligibility criteria of UGC NET for JRF and Assistant Professorship : Candidates who have secured at least 55% marks (without rounding off) in Masters Degree or equivalent examination from universities/institutions recognised by UGC in Humanities (including languages) and Social Science, Computer Science and Applications, Electronic Science etc. (See subjects list Annexure-IV of Information bulletin Year 2019)
https://ugcnet.nta.nic.in/WebInfo/Public/View.aspx?page=5
So, B.Ed is not mandatory for UGC NET. Students in the final year of the Masters programme or waiting for its result can also apply for the exam.
Age: Applicants must not be more than 30 years of age as on June 1, 2020 to apply for Junior Research Fellowship. There is no upper age limit for Assistant Professor. So from above M.Sc. Mathematics students are not eligible for UGC NET but can be eligible for related subjects only (please see subjects list).

Hello,The CSIR NET and UGC NET exam are held for the selection of candidates for assistant professor and JRF in the national institutes of India, The Science stream candidates can apply for CSIR NET exam for life Science, Earth, mathematical, physical and chemical Science subjects. The candidates must have the post-graduation degree to be eligible for the CSIR NET exam. The candidates who have completed the graduation degree are also eligible to apply for the exam, however, they need to complete the master's degree within 2 years from the result declaration. The Pharma candidate is eligible to apply for CSIR NET exam and needs to complete the master's degree after qualifying the NET exam.