you can go for IIT Madras, IIT Delhi, IIT rorkee or IIT DELHI if you are able to crack Jee -advance under AIR-2500,  or via jeemain NIT Tiruchi or by others you can go for SRM-university or Rv college(comedk).  Hope you get it now that what should you have to choose. Although,  your passion about branch like aerospace matters more than college,  because this field needs lots of talent,  patience, iq,  and creativity