Which is better: chemical engineering in BITS Pilani or mechanical engineering in PEC Chandigarh?

Both the institutes are decent. The thing to be focused on is the branch in which you are interested.

As per the various features like faculty, reputation, and packages, the preference can be given below - ECE from IIIT H > NSIT Delhi >Electrical in DCE > Chemical in BITS Pilani > Mechanical in PEC.

The following points can give you a more clear picture regarding BITS Pilani:

• Chemical engineering at BITS Pilani has an edge. It is ranked at 30th position among top engineering colleges in NIRF 2020. 
• Both the institutes are Deemed to be University and approved by AICTE. BITS Pilani has an accreditation ‘Grade A’ by NAAC.

• The admission in BITS Pilani depends upon BITSAT, and in PEC Chandigarh depends upon JEE Main score.
• BITS Pilani has clubs and events like MASSOC, Marketing Club, Astro Club, Finance Club, Editorial Club, Team Robocon, The BITS Radio-Control Club, and Creative Activities Club.
• The campus of BITS Pilani is large and beautiful as compared to PEC.

The placement statistics of both colleges are below.

The top recruiters of BITS are GE India, L&T Limited, Cisco, Myntra, Oracle, DE Shaw, IT Space, Micron, Pfizer.

Looking at the above points, BITS Pilani is regarded as a little superior to PEC. Looking at the above points, BITS Pilani can be declared as the clear winner.