Hello student,

KVPY Stands for Kishore Vaigyanik Protsahan Yojna.

It's exam conducted for providing scholarship to the students studying in class 11th, 12th & UG Science courses.

It is a national level program up to pre-Phd  level and the conducting body is Indian Institute of Sciences (IISc) Bangalore.

The exam is conducted annually.

The medium of the exam is only english and it is being conducted via online mode.

Visit the link below for more information.

https://school.careers360.com/exams/kvpy

On the other hand,

JEE mains and JEE advanced are the national level entrance exam required for securing seat in engineering colleges for several  courses.

And it is conducted by NTA (NATIONAL TESTING AGENCY)

Both the exams have different ideas and methods, also the motive is completely different.

There's just one common point which is both are national level exams.

Visit the link provided below to know about JEE mains.

https://engineering.careers360.com/exams/jee-main

I hope this helps, All the best.