Hi

Yes, you need at least 75% in your class 12th board examination in order to be eligible for NITs if you belong to general /obccategory while if you belong to SC/ ST then it's 65% in class 12th

For your reference,

Jee main eligibility criteria is given below-

--------) Qualification required :- to be eligible  for JEE mains you need 10+2/equivalent qualification.

--------) Passing year :- one is eligible for JEE main examination for consecutive three years starting from the year of appearing for 12th /equivalent examination i. e to be eligible  for   JEE mains 2022   you should be either appearing for 12th board exam or equivalent  in   2022 or should have passed it in 2021 or 2020

--------) There is no age limit to be eligible

-   - ------) there is no minimum percentage requirement to be eligible for JEE Main.

But yes,

To be eligible for NITs, IIITs, CFTIs one needs at least 75% marks in class 12th if belongs to General or OBC category  or at least 65% marks in class 12th if belongs to Sc or St category.

For this year i. e 2021 this minimum percentage requirement of 75% - 65 % has been lifted off   .

But in 2022, yes this 75-65 % criteria for       NITs, IIITs, CFTIs will be there( if removed due to conditions like pandemic then nta will notify about it)    .

So,

with 72% in class 12th board examination if you are from general category then you are not eligible for   nits otherwise you are eligible

if you are from general category then what you can do is appear for improvement examination so that you can get more than 75% and be eligible

For detailed information about jee main eligibility criteria  go through our page, the link for which is provided below

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

Thank you