IIT

You can check the below mentioned link:
https://www.shiksha.com/top-engineering-colleges-in-india-rankingpage-44-2-0-0-0

Hello,
If you want to clear IIT entrance exams, then you should prepare for IIT JEE or IIT JAM test. These exams are considered as very tough exams in India. You have to work hard to prepare for these exams. You should solve previous year question papers to get a perfect idea about the exam and exam pattern.
You can visit the below mentioned link to prepare for IIT's exams:
https://youtu.be/4JtC7SD8cI8
Best of luck.

Both are national importance engineering institute but they have different entrance exam for admission. Like as in nit, JEE main and in IIT, you need to crack JEE advance.

Salary of engineering graduate from legacy IITs will be average around Rs.8 lakhs. Salary may vary in different branches in different IITs.

For all kind of information on the same, visit this site http://gateguide.in/gate-eligibility/

1) Beware of using too many reference books.
2) It can help you to score more by indexing topics in order of priority or weightage they carry in JEE Mains and Class XII board exams.
3) Revise, practice using previous year papers of IIT JEE.
4) Time management is an important factor in JEE Mains. So, while solving model JEE question papers, keep an eye on your watch too. If solving a question is taking too much time, move on.
Kindly go through the link mentioned below to know more details:
http://www.askiitians.com/iit-jee/how-to-prepare-for-iit-jee.html

An expert panel "Committee of Eminent Persons", constituted by the IIT council and headed by Ashok Mishra, the committee has suggested that JEE Mains and JEE Advanced be combined into a single engineering entrance exam. But there is no final decision announced on this subject by MHRD yet.

IITs does not offer degree courses on BCA or B.Sc in CS. You are advised to appear for JEE to do B.Tech CS in any of the IIT. You may refer to academic programs offered by IIT Indore: http://academic.iiti.ac.in/academicprogram.php

Yes, they are very helpful because a school level book is not enough as you need to get to understand every aspect to the core and you need to learn the shortcuts to save time the exam. For all these purposes, you should refer to IIT foundation books.
All the best.

As you know Airbus and Boeing are very big companies and they only select candidates with high expertise level. First of all, you have to be a topper in every field. You can opt for aeronautical engineering from IIT or some other good institute and after that pursue Masters in aviation. With good grades you can apply for these companies and after cracking the interview, you can get a job in these global giants.