Hi

Top  IITs in India are listed below based on nirf ranking 2019 :-

*IIT Madras - Indian Institute of Technology Chennai , it has been ranked 1 ranking in nirf 2019, it is the best college for your Btech.

*IIT Delhi - Indian Institute of Technology (IITD) , it has been ranked 2 ranking in nirf 2019 .

*IIT Bombay - Indian Institute of Technology (IITB) , , it has been ranked 3 ranking in nirf 2019 .

*IIT Kharagpur - Indian Institute of Technology (IITKGP) , , it has been ranked 4 ranking in nirf 2019 .

*IIT Kanpur - Indian Institute of Technology (IITK) , , it has been ranked 5 ranking in nirf 2019 .

*IIT Roorkee - Indian Institute of Technology, Roorkee  , it has been ranked 6 ranking in nirf 2019 .

*IIT Guwahati - Indian Institute of Technology (IITG) ,it has been ranked 7 ranking in nirf 2019 .

*IIT Hyderabad - Indian Institute of Technology (IITH) ,it has been ranked 8 ranking in nirf 2019

For detailed information go through

https://engineering.careers360.com/colleges/list-of-top-iit-colleges-in-india

Thank you