Hii Honey 

First of all let me clear you that there is no specific aeronautical engineering entrance examination for undergraduate level inorder to take admission in aeronautical engineering you have to give the JEE or individual entrance examination of various colleges/university. 

For pursuing aeronautical engineering in elite government institute you have to give the JEE advance otherwise for taking admission in private colleges/university who have Aero branches for that you have to give their individual examination like Hindustan university etc.

All the best