1- JEE (Main+ Advanced) is a national level exam to provide admission in top engineering institutes like NITs/IITs/IIITs and GFTIs. Make sure you get 75% marks in your boards exam or you should be in top 20 percentile to be eligible for these colleges.

DTU and NSIT also consider JEE Main marks but counselling is help seperately.

There are some private colleges as well who takes admission on the basis of JEE Main. You can check the list of colleges below

https://engineering.careers360.com/colleges/ranking/top-private-engineering-colleges-in-India-accepting-jee-main-score

2- You can appear in your state level entrance exam to take admission in your state government colleges. Some of the state level entrance exams are MHT CET, WBJEE, KCET, UPSEE etc.

3- There are top private colleges as well who conduct their own entrance exam to provide admission like BITSAT, VIT, SRM, Amrita, Manipal and COMEDK

* Before applying for any exam make sure you check the eligibility criteria of the exam.

To know in detail about the exams you can refer below link

https://engineering.careers360.com/exams

Good luck!!