I appeared for class 12 in 2018 in which my percentage by below 75. I appeared again for class 12 improvement examination in 2019 in two subjects only thus increasing my percentage above 75%. Am I eligible for admission in NIT, IIIT and GFTI in 2020
Yes you are eligible to take admissions into IIT / NIT and other institutions
you can check inforamtion brochure for the previous year's admissions I think it will same for this year also