See there are many colleges in India which don't take entrances. But remember that taking admission in a college without entrance is tougher because a lot of students can appear who have scored higher marks in there UG. So you shoul dbe very careful about it. Also if you are taking admission in MCA from other field than BCA then it can be tough for you to get in via merit of your UG score.

Here are some of the colleges which offers admission without entrance:

Lovely professional university

Shardha university, nodia

Manipal Institute of Technology, Manipal

Jabalpur Engineering College Jabalpur

Jamia Millia Islamia, New Delhi

For more colleges offering MCA visit the link below:

https://it.careers360.com/colleges/list-of-mca-colleges-in-india

I hope this answer helps. All the very best for your future endeavors!