Hello Aspirant,

See as we know that from this year JEE-Main is being conducted in four attempts so more the number of attempts more candidates are likely to sit for the examination which would ultimately leads to the rise of competition. So if you are seeking admission in top NITs then you have to perform very well in the examination and keeping in mind that you belongs to ST category which is a reservation category so you would have greater chances of getting good NITs in lower marks as compare to that of General category, so in regards to JEE-Main 2021 you should target for at least 90+ percentile for good NITs like NIT Jaipur, NIT Surathakal, NIT Delhi, NIT Warangal and so on.

You can check out marks Vs ranks Vs Percentile from the link given below :-

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Or

You can also use JEE-Main Rank Predictor to predict your rank :-

You can check out previous year's cut-off from the link given below :-

https://josaa.nic.in/Result/Result/currentorcr.aspx

Note that the above prediction is made on the basis of latest cut-offs available on official website of JOSAA or CSAB and the cut-offs are bound to change every year depending upon various factors such as the number of candidates appearing in an examination, the number of candidates qualifying an examination, difficulty level of the paper, and so on.

So you can use JEE-Main College Predictor to predict your chances of admission in different engineering colleges of India on the basis of your JEE-Main 2021 result :-

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

You can also check out the JEE-Main 2021 qualifying cut-off (expected) for JEE-Advance 2021 from the link given below :-

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

I hope this information helps you.

Good Luck!!