The cut off varies category, year and state quota wise, as there is no information out for Jee Main 2018 cut off but as per previous year information the closing rank for other state general category candidate was 16421 so according to this much rank your marks should be approx 170+ as this should be the safest score to get seat there so plan and prepare very well so that you can get admission in your desired NIT.

Good Luck!!!