Hi

You can download sample papers from 

https://www.google.co.in/amp/s/engineering.careers360.com/articles/bitsat-sample-papers%3famp

Also, only few days are left for BITSAT so you can register for BITSAT crash course from this link

https://www.entrancecorner.com/knockout-bitsat/?show_form=1&utm_source=c360&utm_medium=txt&utm_campaign=knockout-bitsat

You can download the previous year or sample papers from below link -

https://engineering.careers360.com/download/bitsat-sample-papers-previous-years

Good Luck!!!