Which is better, PEC Chandigarh mechanical or MNIT Jaipur chemical?

There are many things to consider while choosing a college such as placements, location, branch, choice, your expectations after 4 years of engineering life, etc.

If you have a liking for a particular branch then go to that college all things considered. Being a student of MNIT myself, I can say that, if you are only concerned about placements then MNIT Jaipur will prove to be a better choice.

The following data comparing the placements at both institutes will hopefully give you better clarity.

However, if you are thinking of branch change after entering the college then MNIT Jaipur does not provide that option while PEC Chandigarh offers that option. So choose one according to what matters more to you.