Hello Aspirant,

As per new rules, for JEE mains there is mandatory to qualify 12th. If you qualify 12th with minimum score ,in this case you are able to qualify the JEE mains.

For getting NITs and IIITs there is only mandatory to qualify the 12th . If you qualify 12th with 75% or less than 75% you get the NITs or IIITs.

For more information I'll provide you a link that will help you:

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

I hope this information would be helpful for you

All the best for your bright future ahead.