Hi. Yes, there are entrance exams for btech. The popular entrance exam for btech are:

1. JEE MAIN

2. BITSAT

3. WBJEE

4. AISEEE

5. ALLIANCE AUEET

6. AMITY JEE

7. ASSAM CEE

8. GEEE

To know more about these entrance test, you can go through the following link:

https://engineering.careers360.com/exams

Thank You!