No there's not. Wear something comfortable, and keep in mind, it could be chilly in there due to the air conditioned labs, or maybe a hot n humid if the air conditioning isn't working well.
So be prepared for both scenarios.

There is no as such dresscode for BITSAT exams.
However, students nust have secured 75% marks across PCM subjects which is most important criteria.

The exam is reserved for BITs Campuses like Goa and Pilani for Btech programs.
All details regarding dates and eligibility criteria shared below.

https://engineering.careers360.com/articles/bitsat?icn=bitsat_article&ici=bitsat_exam_rdmrvp

Birla Institute of Technology and Science Admission Tes ...

Eligibility | Application | Exam Pattern | Preparation Tips | Admit Card | Result | Cutoff

Get Updates Brochure