Hey
Actually you have a lots of options in kerala for engineering but  if you are looking for specific branch like cse ,eee,ece then you have be more precise and may have to move outside kerala.
But anyways here are some of the colleges with their ratings and other info you can go through them and decide accordingly.


https://engineering.careers360.com/colleges/ranking/top-engineering-colleges-in-kerala

Hey.

Here is a list of a few top engineering colleges in kerela.

Indian Institute of Space Science and Technology, Thiruvananthapuram  

National Institute of Technology Calicut  

Cochin University of Science and Technology, Kochi  

College of Engineering, Trivandrum  

Government Engineering College, Thrissur  

Indian Institute of Information Technology, Kottayam  

Indian Institute of Technology Palakkad  

Mar Athanasius College of Engineering, Kothamangalam  

Rajagiri School of Engineering and Technology, Kochi  

 Rajiv Gandhi Institute of Technology, Kottayam

Best of luck