There are a few sources that allows you to download the previous years' question papers of BITSAT. However, if you are not able to get hold of them, don't worry. It is because you can instead easily obtain sample papers of BITSAT. An advantage of solving sample papers is they contain a large question bank that you can practise. Also, these questions are set as per the exam pattern, syllabus, and difficulty level of BITSAT exam. Consequently, if you solve them you have a great chance of scoring good marks in the entrance exam. You can download some BITSAT sample papers here. BITSAT Sample Paper

Hi

There are many such websites available that will allow you to download the previous year question papers for free. It is a good idea to practice the previous year question papers of BITSAT as they allow you to know your weak areas giving you time to work on them before you appear in the main exam.

Practicing previous year question papers will also help you increase your speed along with your efficiency and obviously you will be able to manage your time while attempting the questions, so, overall they are of big HELP!

I am sharing the link of a website with you from where you can download and practice the previous year question papers of BITSAT.
BITSAT Sample Papers

I hope this works for you. All the luck to you!