Which is better, MANIT Bhopal CSE, MNIT Jaipur ECE, or MNNIT Allahabad mechanical?

This query hints that you are not inclined towards a particular branch. Instead, you wish to opt for the best option as per your ranking. 

As per placements-

1. During 2022, B.Tech ECE at MNIT Jaipur recorded 97.75% placements, and the average package was 18.01 LPA. 

1. During 2022, MANIT Bhopal B.Tech CSE recorded an average CTC of 17.45 LPA.

1. This year, B.Tech Mechanical at MNNIT Allahabad recorded 90.24% placements, and the average CTC was 12.51 LPA.

Based on the average package, I would recommend you opt for either MNIT Jaipur ECE or MANIT Bhopal CSE. MANIT Bhopal is a good option for B.Tech CSE. You’ll have good placement prospects as a CSE student at this college. Do consult some seniors from all these colleges/branches to make a more informed choice.