NIT

Hello Vaibhav,
NITs don't offer aerospace /aeronautical engineering course. Only a few IITs offer aerospace engineering. For that you need to clear JEE Advanced with a good rank.

Hello Aditya,
The basic eligibility in board exams is to have at least 75 % if you belong to general category (OC). If you belong to the other categories like SC, ST and PWD then, you need to have a minimum of 65%.
Only then you can seek admission into any college under JEE.

Get top notch study material for mathematics to clear all your doubts in maths. You should also join a coaching institute to make command over mathematics subject.
To get admission in NIT, you must appear in IIT JAM Entrance Exam for mathematics.
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I hope it will be helpful to you.

Hello Shashank,
Yes, there are some very good engineering colleges outside IIT & NIT. I am attaching a link that will give you all the relevant information.
https://www.shiksha.com/b-tech/ranking/top-engineering-colleges-in-india/44-2-0-0-0

Hello Vaibhav,
There is no NIT that offers aeronautical engineering course. But few IITs and some top private colleges offer a course is aeronautical /aerospace.
You may refer:
https://www.shiksha.com/b-tech/ranking/top-aeronautical-engineering-colleges-in-india/49-2-0-0-0

Hello Vaibhav,
There is no NIT that offers aeronautical engineering course. But, few IITs like IIT Bombay offers such a course:
You need to clear JEE Advanced with a rank below 2000 to get a seat at IIT Bombay.

Minimum Eligibility to Apply
12th 75%
Additional Details
Mandatory Subjects : Chemistry, Mathematics, Physics
State wise top 20 percentile holder in class 12 exam are eligible to apply.
There are no B.Arch courses available in this college, only B.Tech courses. Above eligibility is for B.Arch courses.

It is somewhat around 4.5 lacs for your batch (2018-2022). The average placement for CS is around 18 lacs per annum. Best wishes.