Hello aspirant! It would be better if you have mentioned the course. India's top private colleges for B.Tech is listed below in the order of their ranking:

1. Vellore Institute of Technology, Vellore
2. Amrita Vishwa Vidyapeetham, Coimbatore
3. Thapar Institute of Engineering and Technology
4. BITS Pilani
5. Amity University, Noida
6. Sastra University, Thanjavur
7. BIT Mesra
8. SRM Institute of Technology, Ramapuram
9. SSN College of Engineering, Kalavakkam
10. Manipal Institute of Technology

Hope this helps!

Hello aspirant,

Here is the list of the top Engineering colleges in India:

1. Indian Institute of Technology, Madras
2. Indian Institute of Technology, Delhi
3. Indian Institute of Technology, Bombay
4. Indian Institute of Technology, Kanpur
5. Indian Institute of Technology, Kharagpur
6. Indian Institute of Technology, Roorkee
7. Indian Institute of Technology, Guwahati
8. Indian Institute of Technology, Hyderabad
9. Indian Institute of Technology, Tiruchirappalli
10. Indian Institute of Technology, Indore

You can also check the following link for further details:

https://engineering.careers360.com/download/ebooks/top-engineering-colleges-in-india-2019

Hope this was helpful to you.

You may ask if you have any further queries.

All the best!!

India's best college, in terms of NIRF (framework that ranks the institutes across the country) ranking are:

IIT Madras

IIT Bombay

IIT Kharagpur

IIT Delhi

IIT Kanpur

IIT Roorkee

IIT hyderabad.

You can view top 100 colleges on NIRF ranking and their score in the below link:

https://www.nirfindia.org/engg

Hello

Here are some of the best colleges in india fot b. Tech :

Indian institute of technology, Madras

Indian institute of technology, Bombay

Indian institute of technology, Delhi

Indian institute of technology, roorkee

Indian institute of technology, kharghpur

Nit tricky

Anna University.  And many more... in the above given colleges from infrastructure to placement all are at the top level.

Good Luck.