Dear Santosh
You have plenty options available in India.
I just want to give some suggestions regarding that. If you are really interested in join engineering,  first preference must be top government colleges and next will be as usual private colleges. So if you can prepare for the government ones or would be easy to get into private ones.
As you wanted here is the here for the top engineering (private) colleges
top colleges
If you want more information,  comment here.
All the best.

Hello Santosh,

As You are unable to choose the private college for btech.So please follow the given link below.Which Could help you in choosing the best private college for.

https://www.embibe.com/exams/top-private-engineering-colleges-in-india-detail-information/

As there are so many private colleges in the country.So it is not possible to suggest a particular college...

All the best

Shubham Goel