No...you were not eligible for seat to NIT,IIIT,IIT...Coz the minimum % of 12 board exam is 75% to be eligible for seat to any IT
Good , u are eligible as they are expecting a mimimmi score of 75% .
If u score good level marks in jee main u can get admission in nits.
Check the Jee main website for further details.
Best of luck
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