Hi

With 70 percentile

• Your rank will be  around 306900 - 345000  as per our rank predictor at

  JEE Main Rank Predictor 2021 - Predict your JEE Main ...

  JEE Main Rank Predictor - Know your expected IIT JEE Main 2021 Rank by ...

Your st rank will be around 8000.

With this rank you have low chances in NIT even being from st with .

For example,

Your profile suggest that you are from Maharashtra so you will be eligible for home state quota in NIT Nagpur

In 6th round of josaa counselling 2020, under home state quota  5753 st rank  was closing rank for gender neutral for st category in NIT nagpur and it was for mining engineering.

You can check the same at

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

Above prediction is on the basis of past year data but  cut off/closing rank for colleges keeps changing every year depending upon many factors like number of students that appeared in the examination, difficulty level of the JEE main question paper for different shifts etc so

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

You hold very good chances to qualify JEE main and be eligible for JEE advanced

For example,
In 2020, qualifying cutoff for st category was 39.0696101 and jee main 2021 expected qualifying cut off percentile is 40-45 percentile.
You can check the same at our page the link is provided below
https://engineering.careers360.com/articles/jee-main-cutoff

If you have any other doubt then you can always reach us to clear them :) we are always available to help you out and guide you

Thankyou