Hey Maanav,
If you are interested to make your future in Aeronautical Engineering then B.Tech /B.E. is the best option for you.
B.tech in Aeronautical Engineering is a 4-year undergraduate degree course you can do after 12th with PCM as main subjects. You should also have good command over these subjects.
This is the best and one of the most challenging field of engineering.
Aeronautical Engineering involves knowledge and study of aircraft for their designing, constructing, maintaining and testing, it deals with the development in the field of Aviation, etc.
You can appear in JEE exam for getting IIT and NIT like colleges for pursuing aeronautical engineering.
Some institutions conduct their own entrance exams for admission.
Good luck!