Hello aspirant, the top colleges for nuclear engineering in India are 

Pandit Deendayal Petroleum University - Gujarat

IIT Bombay

IIT Delhi

And various others institutes

Hope this may help you!

hello aspirant ,

here you can get goverment colleges for nuclear engineering in India :

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

Hope this will help you ! 
 Wish you all the best !

Hello

Here are some of the government colleges in India providing course of Nuclear Enginnering:

Indian Institute of technology,bombay

IIT, DELHI

IIT, MADRAS

IIT, KANPUR

DELHI TECHNOLOGICAL UNIVERSITY

UNIVERSITY OF DELHI

JADAVPUR UNIVERSITY

SASTRA UNIVERSITY

PDPU, Gandhinagar.

Thanks.