Hey Soham

The 75% eligibility criteria has bee scrapped off by CSAB for 2020 for JEE mains (that includes JEE MAIN Paper 2 too) due to the corona virus pandemic which has caused a lot of problems for most boards to conduct the 12th board exams. For more details I request you to visit https://news.careers360.com/jee-main-2020-eligibility-criteria-reduced-for-nits-and-cftis-hrd-minister

You can check the JOSAA eligibility criteria for NITS/SPAS from this link https://engineering.careers360.com/articles/josaa-eligibility-criteria (everything is the same except for the minimum cutoff marks required in 12th board)