Hi

Nta score is percentile and not marks, so it's 51 percentile dear

Yes, you need to write JEE advanced examination if you want to get admission in IIT

This is because,

Admission in IIT is solely on the basis of rank in JEE advanced .

To be eligible for JEE advanced one needs to qualify JEE main

Minimum percentile in jee main 2022 to qualify it to be eligible for jee advanced is given below category wise :-

--------) General :-   88.4121383 percentile

--------) EWS:- 63.1114141 percentile

--------) OBC-NCL :- 67.0090297 percentile

--------) SC :- 43.0820954 percentile

--------) ST:- 26.7771328 percentile

So, with 51 percentile, you are eligible fo r jee advanced

--------) PWD :-  0.0031029 percentile

You can check the same at our page the link is provided below

https://engineering.careers360.com/articles/jee-main-cutoff

To have a personalised report on your chances of getting a college you can go through our college predictor, it will give you complete list of colleges which you can get on the basis of the category you belong to,  your home state, your gender etc, the link for  jee main college predictor is provided below

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

We also have  Btech companion for you in which you get 15+ college predictors, you also get information regarding various counselling i.e Josaa,  MHTCET etc and you get to attend live webinars with experts to guide you and get all your doubts cleared. The link is given below:-

https://www.careers360.com/btech-companion??icn=QnA&ici=qna_answer

Regards

ADITYA KUMAR