Bcom admission generally take place based upon merit based while some of the universities and college conduct there own entrance examination some of them listed below-

1. DUET

2. NPAT

3. BHU UET

4. SUAT

5. IPU CET

6. CUET

For further information you can visit below link for clearly understanding all things-

https://www.careers360.com/courses/b-com-bachelor-of-commerce

For further query feel free to ask!

Hope it helps!