Dear Aspirant,

According to NTA candidate who passed his 10+2 with PCM and have 75% marks minimum in boards from recognise board meeting n Central or state is eligible for JEE . So Yes of course you are eligible for IIT and NIT, but for getting admission in that you have to first qualify the JEE mains with good rank and also have to secure good rank in Jee Advanced.

Best of luck!