For getting admission to NIITs, IITs, and CFTIs you should secure a minimum 75% for general category in the qualifying examination or must be in top 20 percentile in +2 examination conducted by respected boards. Try to achieve higher marks because the competition is very high just a little margin of marks can change your college category.

All the best dear vishnu

Hello dear,

Till there is no official declaration of cutoff of jee mains 2019 but it is  expected that the minimum percentile to qualify for jee advanced will be above 85 percentile in general category.